I could brachiate you could brachiate she could brachiate we could brachiate you could brachiate they could brachiate
V-ing form
I could be brachiating you could be brachiating she could be brachiating we could be brachiating you could be brachiating they could be brachiating
Perfect
I could have brachiated you could have brachiated she could have brachiated we could have brachiated you could have brachiated they could have brachiated
V-ing perfect
I could have been brachiating you could have been brachiating she could have been brachiating we could have been brachiating you could have been brachiating they could have been brachiating
Negation
Simple form
I could not brachiate you could not brachiate she could not brachiate we could not brachiate you could not brachiate they could not brachiate
V-ing form
I could not be brachiating you could not be brachiating she could not be brachiating we could not be brachiating you could not be brachiating they could not be brachiating
Perfect
I could not have brachiated you could not have brachiated she could not have brachiated we could not have brachiated you could not have brachiated they could not have brachiated
V-ing perfect
I could not have been brachiating you could not have been brachiating she could not have been brachiating we could not have been brachiating you could not have been brachiating they could not have been brachiating
Interrogative form
Simple form
could I brachiate? could you brachiate? could she brachiate? could we brachiate? could you brachiate? could they brachiate?
V-ing form
could I be brachiating? could you be brachiating? could she be brachiating? could we be brachiating? could you be brachiating? could they be brachiating?
Perfect
could I have brachiated? could you have brachiated? could she have brachiated? could we have brachiated? could you have brachiated? could they have brachiated?
V-ing perfect
could I have been brachiating? could you have been brachiating? could she have been brachiating? could we have been brachiating? could you have been brachiating? could they have been brachiating?
Interro-negative form
Simple form
could I not brachiate? could you not brachiate? could she not brachiate? could we not brachiate? could you not brachiate? could they not brachiate?
V-ing form
could I not be brachiating? could you not be brachiating? could she not be brachiating? could we not be brachiating? could you not be brachiating? could they not be brachiating?
Perfect
could I not have brachiated? could you not have brachiated? could she not have brachiated? could we not have brachiated? could you not have brachiated? could they not have brachiated?
V-ing perfect
could I not have been brachiating? could you not have been brachiating? could she not have been brachiating? could we not have been brachiating? could you not have been brachiating? could they not have been brachiating?