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had; Yes has; No couldn't; Yes did; No
that, which as, that which, why like, that
he passed has he passed he did pass did he pass
should have failed shouldn’t have failed must have failed mustn’t have failed
lacked of was lacking of was lacking lacked
As if In order that Even though As long as
to pass to have passed pass that he can pass
had ; Yes has ; No couldn’t ; Yes did ; No
For all Even though Although But that
mustn’t have failed may not have failed needn’t have failed shouldn’t have failed
mustn't have failed may not have failed needn't have failed shouldn't have failed
lazier no lazier more lazy lazier
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