I must lame you must lame she must lame we must lame you must lame they must lame
V-ing form
I must be laming you must be laming she must be laming we must be laming you must be laming they must be laming
Perfect
I must have lamed you must have lamed she must have lamed we must have lamed you must have lamed they must have lamed
V-ing perfect
I must have been laming you must have been laming she must have been laming we must have been laming you must have been laming they must have been laming
Negation
Simple form
I must not lame you must not lame she must not lame we must not lame you must not lame they must not lame
V-ing form
I must not be laming you must not be laming she must not be laming we must not be laming you must not be laming they must not be laming
Perfect
I must not have lamed you must not have lamed she must not have lamed we must not have lamed you must not have lamed they must not have lamed
V-ing perfect
I must not have been laming you must not have been laming she must not have been laming we must not have been laming you must not have been laming they must not have been laming
Interrogative form
Simple form
must I lame? must you lame? must she lame? must we lame? must you lame? must they lame?
V-ing form
must I be laming? must you be laming? must she be laming? must we be laming? must you be laming? must they be laming?
Perfect
must I have lamed? must you have lamed? must she have lamed? must we have lamed? must you have lamed? must they have lamed?
V-ing perfect
must I have been laming? must you have been laming? must she have been laming? must we have been laming? must you have been laming? must they have been laming?
Interro-negative form
Simple form
must I not lame? must you not lame? must she not lame? must we not lame? must you not lame? must they not lame?
V-ing form
must I not be laming? must you not be laming? must she not be laming? must we not be laming? must you not be laming? must they not be laming?
Perfect
must I not have lamed? must you not have lamed? must she not have lamed? must we not have lamed? must you not have lamed? must they not have lamed?
V-ing perfect
must I not have been laming? must you not have been laming? must she not have been laming? must we not have been laming? must you not have been laming? must they not have been laming?