could trampoline
Regular verb: trampoline - trampolined- trampolined

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could trampoline
you could trampoline
she could trampoline
we could trampoline
you could trampoline
they could trampoline 	I could be trampolining
you could be trampolining
she could be trampolining
we could be trampolining
you could be trampolining
they could be trampolining	I could have trampolined
you could have trampolined
she could have trampolined
we could have trampolined
you could have trampolined
they could have trampolined	I could have been trampolining
you could have been trampolining
she could have been trampolining
we could have been trampolining
you could have been trampolining
they could have been trampolining	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't trampoline
you couldn't trampoline
she couldn't trampoline
we couldn't trampoline
you couldn't trampoline
they couldn't trampoline 	I couldn't be trampolining
you couldn't be trampolining
she couldn't be trampolining
we couldn't be trampolining
you couldn't be trampolining
they couldn't be trampolining	I couldn't have trampolined
you couldn't have trampolined
she couldn't have trampolined
we couldn't have trampolined
you couldn't have trampolined
they couldn't have trampolined	I couldn't have been trampolining
you couldn't have been trampolining
she couldn't have been trampolining
we couldn't have been trampolining
you couldn't have been trampolining
they couldn't have been trampolining	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I trampoline?
could you trampoline?
could she trampoline?
could we trampoline?
could you trampoline?
could they trampoline? 	could I be trampolining?
could you be trampolining?
could she be trampolining?
could we be trampolining?
could you be trampolining?
could they be trampolining? 	could I have trampolined?
could you have trampolined?
could she have trampolined?
could we have trampolined?
could you have trampolined?
could they have trampolined? 	could I have been trampolining?
could you have been trampolining?
could she have been trampolining?
could we have been trampolining?
could you have been trampolining?
could they have been trampolining? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I trampoline?
couldn't you trampoline?
couldn't she trampoline?
couldn't we trampoline?
couldn't you trampoline?
couldn't they trampoline? 	couldn't I be trampolining?
couldn't you be trampolining?
couldn't she be trampolining?
couldn't we be trampolining?
couldn't you be trampolining?
couldn't they be trampolining? 	couldn't I have trampolined?
couldn't you have trampolined?
couldn't she have trampolined?
couldn't we have trampolined?
couldn't you have trampolined?
couldn't they have trampolined? 	couldn't I have been trampolining?
couldn't you have been trampolining?
couldn't she have been trampolining?
couldn't we have been trampolining?
couldn't you have been trampolining?
couldn't they have been trampolining?