could commutate
Regular verb: commutate - commutated- commutated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could commutate
you could commutate
he could commutate
we could commutate
you could commutate
they could commutate 	I could be commutating
you could be commutating
he could be commutating
we could be commutating
you could be commutating
they could be commutating	I could have commutated
you could have commutated
he could have commutated
we could have commutated
you could have commutated
they could have commutated	I could have been commutating
you could have been commutating
he could have been commutating
we could have been commutating
you could have been commutating
they could have been commutating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not commutate
you could not commutate
he could not commutate
we could not commutate
you could not commutate
they could not commutate 	I could not be commutating
you could not be commutating
he could not be commutating
we could not be commutating
you could not be commutating
they could not be commutating	I could not have commutated
you could not have commutated
he could not have commutated
we could not have commutated
you could not have commutated
they could not have commutated	I could not have been commutating
you could not have been commutating
he could not have been commutating
we could not have been commutating
you could not have been commutating
they could not have been commutating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I commutate?
could you commutate?
could he commutate?
could we commutate?
could you commutate?
could they commutate? 	could I be commutating?
could you be commutating?
could he be commutating?
could we be commutating?
could you be commutating?
could they be commutating? 	could I have commutated?
could you have commutated?
could he have commutated?
could we have commutated?
could you have commutated?
could they have commutated? 	could I have been commutating?
could you have been commutating?
could he have been commutating?
could we have been commutating?
could you have been commutating?
could they have been commutating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not commutate?
could you not commutate?
could he not commutate?
could we not commutate?
could you not commutate?
could they not commutate? 	could I not be commutating?
could you not be commutating?
could he not be commutating?
could we not be commutating?
could you not be commutating?
could they not be commutating? 	could I not have commutated?
could you not have commutated?
could he not have commutated?
could we not have commutated?
could you not have commutated?
could they not have commutated? 	could I not have been commutating?
could you not have been commutating?
could he not have been commutating?
could we not have been commutating?
could you not have been commutating?
could they not have been commutating?