could brachiate
Regular verb: brachiate - brachiated- brachiated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could brachiate
you could brachiate
he could brachiate
we could brachiate
you could brachiate
they could brachiate 	I could be brachiating
you could be brachiating
he could be brachiating
we could be brachiating
you could be brachiating
they could be brachiating	I could have brachiated
you could have brachiated
he could have brachiated
we could have brachiated
you could have brachiated
they could have brachiated	I could have been brachiating
you could have been brachiating
he could have been brachiating
we could have been brachiating
you could have been brachiating
they could have been brachiating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't brachiate
you couldn't brachiate
he couldn't brachiate
we couldn't brachiate
you couldn't brachiate
they couldn't brachiate 	I couldn't be brachiating
you couldn't be brachiating
he couldn't be brachiating
we couldn't be brachiating
you couldn't be brachiating
they couldn't be brachiating	I couldn't have brachiated
you couldn't have brachiated
he couldn't have brachiated
we couldn't have brachiated
you couldn't have brachiated
they couldn't have brachiated	I couldn't have been brachiating
you couldn't have been brachiating
he couldn't have been brachiating
we couldn't have been brachiating
you couldn't have been brachiating
they couldn't have been brachiating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I brachiate?
could you brachiate?
could he brachiate?
could we brachiate?
could you brachiate?
could they brachiate? 	could I be brachiating?
could you be brachiating?
could he be brachiating?
could we be brachiating?
could you be brachiating?
could they be brachiating? 	could I have brachiated?
could you have brachiated?
could he have brachiated?
could we have brachiated?
could you have brachiated?
could they have brachiated? 	could I have been brachiating?
could you have been brachiating?
could he have been brachiating?
could we have been brachiating?
could you have been brachiating?
could they have been brachiating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I brachiate?
couldn't you brachiate?
couldn't he brachiate?
couldn't we brachiate?
couldn't you brachiate?
couldn't they brachiate? 	couldn't I be brachiating?
couldn't you be brachiating?
couldn't he be brachiating?
couldn't we be brachiating?
couldn't you be brachiating?
couldn't they be brachiating? 	couldn't I have brachiated?
couldn't you have brachiated?
couldn't he have brachiated?
couldn't we have brachiated?
couldn't you have brachiated?
couldn't they have brachiated? 	couldn't I have been brachiating?
couldn't you have been brachiating?
couldn't he have been brachiating?
couldn't we have been brachiating?
couldn't you have been brachiating?
couldn't they have been brachiating?