I could blanket you could blanket she could blanket we could blanket you could blanket they could blanket
V-ing form
I could be blanketing you could be blanketing she could be blanketing we could be blanketing you could be blanketing they could be blanketing
Perfect
I could have blanketed you could have blanketed she could have blanketed we could have blanketed you could have blanketed they could have blanketed
V-ing perfect
I could have been blanketing you could have been blanketing she could have been blanketing we could have been blanketing you could have been blanketing they could have been blanketing
Negation
Simple form
I could not blanket you could not blanket she could not blanket we could not blanket you could not blanket they could not blanket
V-ing form
I could not be blanketing you could not be blanketing she could not be blanketing we could not be blanketing you could not be blanketing they could not be blanketing
Perfect
I could not have blanketed you could not have blanketed she could not have blanketed we could not have blanketed you could not have blanketed they could not have blanketed
V-ing perfect
I could not have been blanketing you could not have been blanketing she could not have been blanketing we could not have been blanketing you could not have been blanketing they could not have been blanketing
Interrogative form
Simple form
could I blanket? could you blanket? could she blanket? could we blanket? could you blanket? could they blanket?
V-ing form
could I be blanketing? could you be blanketing? could she be blanketing? could we be blanketing? could you be blanketing? could they be blanketing?
Perfect
could I have blanketed? could you have blanketed? could she have blanketed? could we have blanketed? could you have blanketed? could they have blanketed?
V-ing perfect
could I have been blanketing? could you have been blanketing? could she have been blanketing? could we have been blanketing? could you have been blanketing? could they have been blanketing?
Interro-negative form
Simple form
could I not blanket? could you not blanket? could she not blanket? could we not blanket? could you not blanket? could they not blanket?
V-ing form
could I not be blanketing? could you not be blanketing? could she not be blanketing? could we not be blanketing? could you not be blanketing? could they not be blanketing?
Perfect
could I not have blanketed? could you not have blanketed? could she not have blanketed? could we not have blanketed? could you not have blanketed? could they not have blanketed?
V-ing perfect
could I not have been blanketing? could you not have been blanketing? could she not have been blanketing? could we not have been blanketing? could you not have been blanketing? could they not have been blanketing?