I could hint you could hint she could hint we could hint you could hint they could hint
V-ing form
I could be hinting you could be hinting she could be hinting we could be hinting you could be hinting they could be hinting
Perfect
I could have hinted you could have hinted she could have hinted we could have hinted you could have hinted they could have hinted
V-ing perfect
I could have been hinting you could have been hinting she could have been hinting we could have been hinting you could have been hinting they could have been hinting
Negation
Simple form
I could not hint you could not hint she could not hint we could not hint you could not hint they could not hint
V-ing form
I could not be hinting you could not be hinting she could not be hinting we could not be hinting you could not be hinting they could not be hinting
Perfect
I could not have hinted you could not have hinted she could not have hinted we could not have hinted you could not have hinted they could not have hinted
V-ing perfect
I could not have been hinting you could not have been hinting she could not have been hinting we could not have been hinting you could not have been hinting they could not have been hinting
Interrogative form
Simple form
could I hint? could you hint? could she hint? could we hint? could you hint? could they hint?
V-ing form
could I be hinting? could you be hinting? could she be hinting? could we be hinting? could you be hinting? could they be hinting?
Perfect
could I have hinted? could you have hinted? could she have hinted? could we have hinted? could you have hinted? could they have hinted?
V-ing perfect
could I have been hinting? could you have been hinting? could she have been hinting? could we have been hinting? could you have been hinting? could they have been hinting?
Interro-negative form
Simple form
could I not hint? could you not hint? could she not hint? could we not hint? could you not hint? could they not hint?
V-ing form
could I not be hinting? could you not be hinting? could she not be hinting? could we not be hinting? could you not be hinting? could they not be hinting?
Perfect
could I not have hinted? could you not have hinted? could she not have hinted? could we not have hinted? could you not have hinted? could they not have hinted?
V-ing perfect
could I not have been hinting? could you not have been hinting? could she not have been hinting? could we not have been hinting? could you not have been hinting? could they not have been hinting?