could proportion
Regular verb: proportion - proportioned- proportioned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could proportion
you could proportion
he could proportion
we could proportion
you could proportion
they could proportion 	I could be proportioning
you could be proportioning
he could be proportioning
we could be proportioning
you could be proportioning
they could be proportioning	I could have proportioned
you could have proportioned
he could have proportioned
we could have proportioned
you could have proportioned
they could have proportioned	I could have been proportioning
you could have been proportioning
he could have been proportioning
we could have been proportioning
you could have been proportioning
they could have been proportioning	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not proportion
you could not proportion
he could not proportion
we could not proportion
you could not proportion
they could not proportion 	I could not be proportioning
you could not be proportioning
he could not be proportioning
we could not be proportioning
you could not be proportioning
they could not be proportioning	I could not have proportioned
you could not have proportioned
he could not have proportioned
we could not have proportioned
you could not have proportioned
they could not have proportioned	I could not have been proportioning
you could not have been proportioning
he could not have been proportioning
we could not have been proportioning
you could not have been proportioning
they could not have been proportioning	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I proportion?
could you proportion?
could he proportion?
could we proportion?
could you proportion?
could they proportion? 	could I be proportioning?
could you be proportioning?
could he be proportioning?
could we be proportioning?
could you be proportioning?
could they be proportioning? 	could I have proportioned?
could you have proportioned?
could he have proportioned?
could we have proportioned?
could you have proportioned?
could they have proportioned? 	could I have been proportioning?
could you have been proportioning?
could he have been proportioning?
could we have been proportioning?
could you have been proportioning?
could they have been proportioning? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not proportion?
could you not proportion?
could he not proportion?
could we not proportion?
could you not proportion?
could they not proportion? 	could I not be proportioning?
could you not be proportioning?
could he not be proportioning?
could we not be proportioning?
could you not be proportioning?
could they not be proportioning? 	could I not have proportioned?
could you not have proportioned?
could he not have proportioned?
could we not have proportioned?
could you not have proportioned?
could they not have proportioned? 	could I not have been proportioning?
could you not have been proportioning?
could he not have been proportioning?
could we not have been proportioning?
could you not have been proportioning?
could they not have been proportioning?