1.If I had known your phone number yestoday, I would have called you.
2.If you hasitated now, you would suffer from it.
3.If they had left home early in the morning, they would (be able to) get there in half an hour.
If I knowed your mobile phone's number , I'll call you.
If you hesitated this moment, you might suffer in the future.
If they left home in early morning , they would arrived at half hours .
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