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 couldn't commutate
you couldn't commutate
he couldn't commutate
we couldn't commutate
you couldn't commutate
they couldn't commutate 	I couldn't be commutating
you couldn't be commutating
he couldn't be commutating
we couldn't be commutating
you couldn't be commutating
they couldn't be commutating	I couldn't have commutated
you couldn't have commutated
he couldn't have commutated
we couldn't have commutated
you couldn't have commutated
they couldn't have commutated	I couldn't have been commutating
you couldn't have been commutating
he couldn't have been commutating
we couldn't have been commutating
you couldn't have been commutating
they couldn't 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 	
couldn't I commutate?
couldn't you commutate?
couldn't he commutate?
couldn't we commutate?
couldn't you commutate?
couldn't they commutate? 	couldn't I be commutating?
couldn't you be commutating?
couldn't he be commutating?
couldn't we be commutating?
couldn't you be commutating?
couldn't they be commutating? 	couldn't I have commutated?
couldn't you have commutated?
couldn't he have commutated?
couldn't we have commutated?
couldn't you have commutated?
couldn't they have commutated? 	couldn't I have been commutating?
couldn't you have been commutating?
couldn't he have been commutating?
couldn't we have been commutating?
couldn't you have been commutating?
couldn't they have been commutating?