English verb conjugation
MUST CRATER

Regular verb: crater - cratered - cratered

Affirmation

Simple form	V-ing form
I must crater you must crater she must crater we must crater you must crater they must crater	I must be cratering you must be cratering she must be cratering we must be cratering you must be cratering they must be cratering
Perfect	V-ing perfect
I must have cratered you must have cratered she must have cratered we must have cratered you must have cratered they must have cratered	I must have been cratering you must have been cratering she must have been cratering we must have been cratering you must have been cratering they must have been cratering

Negation

Simple form	V-ing form
I must not crater you must not crater she must not crater we must not crater you must not crater they must not crater	I must not be cratering you must not be cratering she must not be cratering we must not be cratering you must not be cratering they must not be cratering
Perfect	V-ing perfect
I must not have cratered you must not have cratered she must not have cratered we must not have cratered you must not have cratered they must not have cratered	I must not have been cratering you must not have been cratering she must not have been cratering we must not have been cratering you must not have been cratering they must not have been cratering

Interrogative form

Simple form	V-ing form
must I crater? must you crater? must she crater? must we crater? must you crater? must they crater?	must I be cratering? must you be cratering? must she be cratering? must we be cratering? must you be cratering? must they be cratering?
Perfect	V-ing perfect
must I have cratered? must you have cratered? must she have cratered? must we have cratered? must you have cratered? must they have cratered?	must I have been cratering? must you have been cratering? must she have been cratering? must we have been cratering? must you have been cratering? must they have been cratering?

Interro-negative form

Simple form	V-ing form
must I not crater? must you not crater? must she not crater? must we not crater? must you not crater? must they not crater?	must I not be cratering? must you not be cratering? must she not be cratering? must we not be cratering? must you not be cratering? must they not be cratering?
Perfect	V-ing perfect
must I not have cratered? must you not have cratered? must she not have cratered? must we not have cratered? must you not have cratered? must they not have cratered?	must I not have been cratering? must you not have been cratering? must she not have been cratering? must we not have been cratering? must you not have been cratering? must they not have been cratering?