could trammel
Regular verb: trammel - trammeled- trammeled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could trammel
you could trammel
he could trammel
we could trammel
you could trammel
they could trammel 	I could be trammeling
you could be trammeling
he could be trammeling
we could be trammeling
you could be trammeling
they could be trammeling	I could have trammeled
you could have trammeled
he could have trammeled
we could have trammeled
you could have trammeled
they could have trammeled	I could have been trammeling
you could have been trammeling
he could have been trammeling
we could have been trammeling
you could have been trammeling
they could have been trammeling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't trammel
you couldn't trammel
he couldn't trammel
we couldn't trammel
you couldn't trammel
they couldn't trammel 	I couldn't be trammeling
you couldn't be trammeling
he couldn't be trammeling
we couldn't be trammeling
you couldn't be trammeling
they couldn't be trammeling	I couldn't have trammeled
you couldn't have trammeled
he couldn't have trammeled
we couldn't have trammeled
you couldn't have trammeled
they couldn't have trammeled	I couldn't have been trammeling
you couldn't have been trammeling
he couldn't have been trammeling
we couldn't have been trammeling
you couldn't have been trammeling
they couldn't have been trammeling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I trammel?
could you trammel?
could he trammel?
could we trammel?
could you trammel?
could they trammel? 	could I be trammeling?
could you be trammeling?
could he be trammeling?
could we be trammeling?
could you be trammeling?
could they be trammeling? 	could I have trammeled?
could you have trammeled?
could he have trammeled?
could we have trammeled?
could you have trammeled?
could they have trammeled? 	could I have been trammeling?
could you have been trammeling?
could he have been trammeling?
could we have been trammeling?
could you have been trammeling?
could they have been trammeling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I trammel?
couldn't you trammel?
couldn't he trammel?
couldn't we trammel?
couldn't you trammel?
couldn't they trammel? 	couldn't I be trammeling?
couldn't you be trammeling?
couldn't he be trammeling?
couldn't we be trammeling?
couldn't you be trammeling?
couldn't they be trammeling? 	couldn't I have trammeled?
couldn't you have trammeled?
couldn't he have trammeled?
couldn't we have trammeled?
couldn't you have trammeled?
couldn't they have trammeled? 	couldn't I have been trammeling?
couldn't you have been trammeling?
couldn't he have been trammeling?
couldn't we have been trammeling?
couldn't you have been trammeling?
couldn't they have been trammeling?