I could regard you could regard she could regard we could regard you could regard they could regard
V-ing form
I could be regarding you could be regarding she could be regarding we could be regarding you could be regarding they could be regarding
Perfect
I could have regarded you could have regarded she could have regarded we could have regarded you could have regarded they could have regarded
V-ing perfect
I could have been regarding you could have been regarding she could have been regarding we could have been regarding you could have been regarding they could have been regarding
Negation
Simple form
I could not regard you could not regard she could not regard we could not regard you could not regard they could not regard
V-ing form
I could not be regarding you could not be regarding she could not be regarding we could not be regarding you could not be regarding they could not be regarding
Perfect
I could not have regarded you could not have regarded she could not have regarded we could not have regarded you could not have regarded they could not have regarded
V-ing perfect
I could not have been regarding you could not have been regarding she could not have been regarding we could not have been regarding you could not have been regarding they could not have been regarding
Interrogative form
Simple form
could I regard? could you regard? could she regard? could we regard? could you regard? could they regard?
V-ing form
could I be regarding? could you be regarding? could she be regarding? could we be regarding? could you be regarding? could they be regarding?
Perfect
could I have regarded? could you have regarded? could she have regarded? could we have regarded? could you have regarded? could they have regarded?
V-ing perfect
could I have been regarding? could you have been regarding? could she have been regarding? could we have been regarding? could you have been regarding? could they have been regarding?
Interro-negative form
Simple form
could I not regard? could you not regard? could she not regard? could we not regard? could you not regard? could they not regard?
V-ing form
could I not be regarding? could you not be regarding? could she not be regarding? could we not be regarding? could you not be regarding? could they not be regarding?
Perfect
could I not have regarded? could you not have regarded? could she not have regarded? could we not have regarded? could you not have regarded? could they not have regarded?
V-ing perfect
could I not have been regarding? could you not have been regarding? could she not have been regarding? could we not have been regarding? could you not have been regarding? could they not have been regarding?