A group of 11 men plied girls as young as 13 with alcohol and drugs so they could use them for sex, a court has heard.

The five victims, who were aged between 13 and 15 when the alleged abuse began, were passed around by the men "who acted together to sexually exploit the girls", a trial at Liverpool crown court was told.

All the girls were vulnerable as they were from broken homes and one was in the care of a local authority. Rachel Smith, opening the case for the prosecution, warned the jurors: "Some of you may find what you are about to hear distressing. The events and circumstances described by the girls are at best saddening and at worst shocking in places. No child should be exploited as these girls say they were."

The court heard that some of the girls were raped and physically assaulted, with some forced to have sex with "several men in a day, several times a week", in and around Rochdale, Greater Manchester, in 2008 and 2009. Some of the defendants allegedly paid the girls and took payments from other men to whom they supplied the girls for sex.

Kabeer Hassan, 24, Abdul Aziz, 41, Abdul Rauf, 43, Mohammed Sajid, 35, Adil Khan, 42, Abdul Qayyum, 43, Mohammed Amin, 44, Qamar Shahzad, 29, Liaquat Shah, 41, and Hamid Safi, 22, are on trial at Liverpool crown court charged with conspiracy to engage in sexual activity with children under the age of 16. They have all pleaded not guilty along with a 59-year-old man who cannot be named for legal reasons, who also denies two rapes, aiding and abetting a rape, one sexual assault and an allegation of trafficking within the UK for sexual exploitation.

Hassan, from Oldham, and Shahzad, from Rochdale, also deny rape. Aziz, of Rochdale, denies two counts of rape and one allegation of trafficking for sexual exploitation. Khan and Rauf, of Rochdale, have also pleaded not guilty to trafficking for sexual exploitation. Sajid, also of Rochdale, denies trafficking, two counts of rape and one allegation of sexual activity with a child. Amin, from Rochdale, denies sexual assault. Shah and Safi, both of Rochdale, each denied two counts of rape and Safi has also pleaded not guilty to trafficking.

One 13-year-old victim became pregnant by Adil Khan and had an abortion, the jury was told. She said Khan attacked her when she refused to have sex with "two of four men" who were waiting at a house in Rochdale. He later denied knowing her, despite DNA proof he was the father of the baby, the court heard.

One girl said she was raped by Abdul Aziz in his taxi in December 2009 and afterwards he told her she no longer needed to pay the fare. She was also raped by Liaquat Shah while Safi watched, the jury was told. She claimed two men raped her while she was so drunk "she was vomiting over the side of the bed" after drinking spirits and beer.

She told police: "They were just having it in turns sort of thing … there was nothing I could do, I was throwing up, I just kept throwing up … And I felt like I couldn't move." When the men left, she said, she cried herself to sleep.

Another alleged victim, who was 14, said she would get "proper hammered" and, the court heard, "lost count of the number of times she had had sex with men when she did not want to do so".

The prosecutor said: "She was unable to describe all of the men but said she would regularly find herself drunk to near-unconsciousness, waking up with men having sex with her."

The court was told that in about August 2008 Abdul Aziz "took over" from the 59-year-old and started taking girls to various locations – including a flat in Rochdale where Sajid and Shahzad lived – where a "group of men" would always be waiting to have sex with them.

"Abdul Aziz was being paid by the various men to whom he delivered the girls for the purposes of sex," Smith said. One girl estimated that she was "having sex with several men in a day, several times a week", she said.

The court heard that on one occasion the 59-year-old man met two girls at a takeaway where they were given food and vodka.

He allegedly told a 15-year-old that he wanted sex, saying: "It's part of the deal because I bought you vodka, you have to give me something." When the girl refused, he allegedly raped her. The court was told that when the girl started crying, he said: "Don't cry, I love you."

On another occasion, the jury heard, he took one of the girls to Oldham where she was raped by another man, who told her: "Don't tell anyone. I'll give you money. I'll give you anything you want."

One girl, who was 15 when she met the defendants, told police she had been flattered by the attention. She said she thought it meant she was attractive and they thought she was pretty. However, she quickly began to drink heavily, became depressed and incapable of getting herself out of the situation, the court heard.

"At first I was scared," she told police. "Then after that it … just didn't bother me any more … At first I felt dead bad and horrible but then I didn't feel anything any more." The girl was persistently coerced or forced into submission by the men, Smith said.

"When she was told that she had to have sex with the particular defendant or other men, she would submit to them, although she describes herself as lying impassively with her eyes shut or looking at the wall. She was given alcohol, which she drank heavily, not least because it numbed her thoughts to what was happening to her."

It was "common knowledge", Smith said, among the defendants that the girl was 15 and that Aziz would give her lifts to school while Rauf asked the other older girl if she "knew anyone younger". Smith told the jury that one of the older girls, who was 16 at the time, recruited younger girls for the men as well as having sex with them for money.

The 16-year-old introduced a 14-year-old girl "to a number of different men who wanted to have sex with her, with or without her consent". The younger girl was raped at a takeaway and taken by the man to other places where she was provided to other men for sex.

One girl, who was 13 when the alleged abuse began, told police that the men she met were "friends" who looked after her and "her number would be passed around amongst the Pakistani men in her area".

She told police: "When you've got Asian friends, [your] number gets passed and they pass it to their friends. And they pass it to their friends, end up with a massive circle … everyone's got it."

"There were also occasions on which one or more of the girls were so incapacitated by alcohol and/or drugs that they were incapable of having any control over whether or with whom they had sexual intercourse," Smith said.

The court heard the men knew each other and that two of them worked in the takeaways Tasty Bites and the Balti House, both in Heywood. Four of the other men worked as cab drivers at local taxi firms, one was a student and four were jobless.

The men were known to the girls by nicknames such as "Master" and "Tiger", the court was told. The girls would often spend their days "unsupervised by responsible adults", were not in school regularly and drank and smoked and hung around with little to do.

Smith said they were the "sort of children who were easy to identify, target and exploit for the sexual gratification of these men".

The trial continues.