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must be must have been should be should have been
must be must have been should be should have been
must be must have been should be should have been
couldn’t hear couldn’t have heard didn’t hear wouldn’t have heard
couldn’t hear couldn’t have heard didn’t hear wouldn’t have heard
must be must have been should be should have been
recognize realize know hear
couldn’t hear couldn’t have heard didn’t hear wouldn’t have heard
must be must have been should be should have been
couldn’t hear mustn’t hear couldn’t have heard wouldn’t have heard
must be must have been should have been could have been
lied; lay lay; lied lay; lay lied; lied
couldn’t hear couldn’t have heard didn’t hear wouldn’t have heard
have watched watched was watching would watch
must be must have been should be should have been
can be must have been must be should have been
couldn’t hear couldn’t have heard didn’t hear wouldn’t have heard
is watching was watching watched watches
might have slept must be sleeping might be sleeping must have been sleeping
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