English verb conjugation
MUST PAPER

Regular verb: paper - papered - papered

Affirmation

Simple form	V-ing form
I must paper you must paper she must paper we must paper you must paper they must paper	I must be papering you must be papering she must be papering we must be papering you must be papering they must be papering
Perfect	V-ing perfect
I must have papered you must have papered she must have papered we must have papered you must have papered they must have papered	I must have been papering you must have been papering she must have been papering we must have been papering you must have been papering they must have been papering

Negation

Simple form	V-ing form
I must not paper you must not paper she must not paper we must not paper you must not paper they must not paper	I must not be papering you must not be papering she must not be papering we must not be papering you must not be papering they must not be papering
Perfect	V-ing perfect
I must not have papered you must not have papered she must not have papered we must not have papered you must not have papered they must not have papered	I must not have been papering you must not have been papering she must not have been papering we must not have been papering you must not have been papering they must not have been papering

Interrogative form

Simple form	V-ing form
must I paper? must you paper? must she paper? must we paper? must you paper? must they paper?	must I be papering? must you be papering? must she be papering? must we be papering? must you be papering? must they be papering?
Perfect	V-ing perfect
must I have papered? must you have papered? must she have papered? must we have papered? must you have papered? must they have papered?	must I have been papering? must you have been papering? must she have been papering? must we have been papering? must you have been papering? must they have been papering?

Interro-negative form

Simple form	V-ing form
must I not paper? must you not paper? must she not paper? must we not paper? must you not paper? must they not paper?	must I not be papering? must you not be papering? must she not be papering? must we not be papering? must you not be papering? must they not be papering?
Perfect	V-ing perfect
must I not have papered? must you not have papered? must she not have papered? must we not have papered? must you not have papered? must they not have papered?	must I not have been papering? must you not have been papering? must she not have been papering? must we not have been papering? must you not have been papering? must they not have been papering?