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