Conditional - type III

Form

if clause	main clause
Past Perfect	would + have + past participle or could + have + past participle or might + have + past participle

Examples

If I had studied,	I would have passed the exams.
If I had studied,	I could have passed the exams.
If I had studied,	I might have passed the exams.

The if-clause can be at the beginning or at the end of the sentence.

If I had studied,	I would have passed the exams.
I would have passed the exams	if I had studied.