I could matriculate you could matriculate she could matriculate we could matriculate you could matriculate they could matriculate
V-ing form
I could be matriculating you could be matriculating she could be matriculating we could be matriculating you could be matriculating they could be matriculating
Perfect
I could have matriculated you could have matriculated she could have matriculated we could have matriculated you could have matriculated they could have matriculated
V-ing perfect
I could have been matriculating you could have been matriculating she could have been matriculating we could have been matriculating you could have been matriculating they could have been matriculating
Negation
Simple form
I could not matriculate you could not matriculate she could not matriculate we could not matriculate you could not matriculate they could not matriculate
V-ing form
I could not be matriculating you could not be matriculating she could not be matriculating we could not be matriculating you could not be matriculating they could not be matriculating
Perfect
I could not have matriculated you could not have matriculated she could not have matriculated we could not have matriculated you could not have matriculated they could not have matriculated
V-ing perfect
I could not have been matriculating you could not have been matriculating she could not have been matriculating we could not have been matriculating you could not have been matriculating they could not have been matriculating
Interrogative form
Simple form
could I matriculate? could you matriculate? could she matriculate? could we matriculate? could you matriculate? could they matriculate?
V-ing form
could I be matriculating? could you be matriculating? could she be matriculating? could we be matriculating? could you be matriculating? could they be matriculating?
Perfect
could I have matriculated? could you have matriculated? could she have matriculated? could we have matriculated? could you have matriculated? could they have matriculated?
V-ing perfect
could I have been matriculating? could you have been matriculating? could she have been matriculating? could we have been matriculating? could you have been matriculating? could they have been matriculating?
Interro-negative form
Simple form
could I not matriculate? could you not matriculate? could she not matriculate? could we not matriculate? could you not matriculate? could they not matriculate?
V-ing form
could I not be matriculating? could you not be matriculating? could she not be matriculating? could we not be matriculating? could you not be matriculating? could they not be matriculating?
Perfect
could I not have matriculated? could you not have matriculated? could she not have matriculated? could we not have matriculated? could you not have matriculated? could they not have matriculated?
V-ing perfect
could I not have been matriculating? could you not have been matriculating? could she not have been matriculating? could we not have been matriculating? could you not have been matriculating? could they not have been matriculating?