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he lives does he live he lived did he live
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should have spoken; would know spoke; would know had spoken; would have known had spoken; would know
what to do how to do it when to do when to do
would have known would know will know will have known
although which whether who
do with deal with play with work with
to be put on being put on put on putting on
asked … would know had asked … would have known asked him … know had asked … would know
whom who with whom with who