must proportion
Regular verb: proportion - proportioned- proportioned

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

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

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

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