Could have, could have been

Could have

You could have phoned me earlier.

I could have scored higher marks had I worked harder.

You could have slipped and fallen.

You could have reported the matter to the police.

She could have married a more handsome man.

I could have gone to the market but half the shops were shut.

Could have been

There could have been a bench in this corner of the garden.

There could have been an accident due to the high speed breaker.

I could have been informed earlier about the meeting.

We could have been more alert about safety matter.

You could have been more polite to talking to Robert.