NEW DELHI: Forget largecaps or midcaps. The best way to make long-term money in the market seems to be to bet on potential future Sensex members.Equity benchmark Sensex, your heartbeat index, keeps changing not just in value but in composition too.The 30 Sensex component companies happen to be some of the largest and most-actively traded stocks, representing various industrial sectors of the economy Many Sensex stocks such as Coal India Power Grid and Adani Ports and SEZ were not a part of the 30-pack index 10 years back. Some of them were not even listed. In 10 years, they not only made it to the Sensex universe, but also generated big returns for investors.If you could identify these stocks in 2006, you would have multiplied your wealth by up to 1,700 per cent, or roughly 18 times by now.Data shows four current Sensex stocks, which were not a part of the index 10 years back, grew 5-18 times during this period when the BSE Sensex rallied 2.8 times.Sensex stock Asian Paints on Thursday settled at Rs 1,018, up 17.63 times, or 1,663 per cent over Rs 57.76 the price it quoted at on July 13, 2006. This translates into a compounded annual growth rate of 33 per cent.Lupin, India's third-largest drugmaker, has surged 1,636 per cent or 17.36 times to Rs 1,672.05 in the past one decade. The stock was ruling at Rs 96 around this time around in 2006.Axis Bank, now India’s third largest private lender behind ICICI Bank and HDFC Bank , has seen its stock climb 10.26 times or 927 per cent in the past one decade.M&M, which over the years entered the SUV segment, has rallied 394 per cent or 4.94 times to Rs 1,473.15 from Rs 297.78 in 2006.GAIL, meanwhile, has generated 120 per cent, or 2.2 times, returns during the same period.There are also companies such as Ranbaxy and Satyam Computer Services , which lost their identity after their merger with Sun Pharma and Tech Mahindra , respectively, during the period.Many firms saw renaming. Reliance Energy in 2006 is now known as Reliance Infrastructure. Infosys Technologies is today’s Infosys.Can you guess the next four Sensex companies?