Say 3 sentences of what could have taken place in the past but didn't happen . example: the film has disappointed me: the young man could have become rich but he didn't . the girl could have become a star but she didn't. they could have married but this didn't happen. what a life.

1.            i could have won, but i didn`t. - я мог выиграть, но я не сделал этого.   2.            i could have helped you with your exam, but you didn`t ask. - я могла бы тебе с экзаменом, но ты   не попросил.   3.            you could have phoned me but you didn`t. - ты мог бы мне позвонить, но ты этого не сделал.