STAMFORD-After a day picking jurors to defend against charges that he exposed himself and groped a 14-year-old girl near her bus stop in Stamford, a Bridgeport man admitted his guilt and now faces up to 20 years in jail when he returns to court for sentencing in March. Humberto Garcia -Palacio, 32, of Orland Street, pleaded guilty to a felony count of risk of injury to a child by having contact with the intimate parts of a child under 16 in a sexual and indecent manner.