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Moderators asked the candidates about their greatest weaknesses. Candidates, asked their biggest weakness, duck and dodge

In the job interview that is the CNBC Republican debate, candidates confessed their biggest weaknesses, or something like that.

For Donald Trump, "it's that I trust people too much," he said. "I'm too trusting. When they let me down, when they let me down ... I find it very, very hard to forgive people who deceived me."

Ohio Gov. John Kasich opened the event by failing to answer the answer the question at all, saying he worried that the U.S. is "on the verge of picking someone who cannot do this job.”

Mike Huckabee: "Well, John, I don't really have any weaknesses," he told moderator John Harwood, then pointing to his wife: "She'll be able to give you more that I can ever could."

Jeb Bush: "I am by my nature impatient and this is not an endeavor that rewards that ... also, I can't fake anger. ... It troubles me that people are rewarded for tearing down this country."

Marco Rubio: "I'm not sure it's a weakness, but I do believe I share a sense of optimism" that the greatest days of the U.S. are not behind it.

Ben Carson: "Not really seeing myself in that position" of running for president until people told him he had to run.

Carly Fiorina joked that she was told that she did not smile enough during the last debate.

Ted Cruz: "I'm too agreeable, easy-going," he joked. "I'm a fighter," he said, turning more serious. "If you want someone to grab a beer with, I may not be that guy, but if you want someone who will drive you home, I will get the job done, and I will drive you home."

Chris Christie: The New Jersey governor said he had a hard time telling between the isolationist and the socialist running for the Democratic nomination. The pessimist is undeniably Hillary Clinton, he said.

Rand Paul: "Threatening to filibuster."