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Did, go to Do, go to Have, gone to Have, been to
must have returned could return should have returned might return
do I could I did he has he
have prepared had prepared have been preparing was preparing
couldn’t have mustn’t have needn’t have oughtn’t to have
do I could I did he has he
have prepared had prepared have been preparing was preparing
have prepared had prepared have been preparing was preparing
didn’t he don’t I do I mustn’t he
wanted; wrote had wanted; was writing have wanted; wrote wanted; have been writing
do I did he could I has he
did not sell have not sold had not sold do not sell
must have returned could return should have returned might return
it, that it, one one, it one, this
was had been went have been
wanted; wrote had wanted; was writing have wanted; wrote wanted; have been writing
have made have become have been have turned
do I could he did he has he
have prepared had prepared have been preparing was preparing
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