I must starve you must starve she must starve we must starve you must starve they must starve
V-ing form
I must be starving you must be starving she must be starving we must be starving you must be starving they must be starving
Perfect
I must have starved you must have starved she must have starved we must have starved you must have starved they must have starved
V-ing perfect
I must have been starving you must have been starving she must have been starving we must have been starving you must have been starving they must have been starving
Negation
Simple form
I must not starve you must not starve she must not starve we must not starve you must not starve they must not starve
V-ing form
I must not be starving you must not be starving she must not be starving we must not be starving you must not be starving they must not be starving
Perfect
I must not have starved you must not have starved she must not have starved we must not have starved you must not have starved they must not have starved
V-ing perfect
I must not have been starving you must not have been starving she must not have been starving we must not have been starving you must not have been starving they must not have been starving
Interrogative form
Simple form
must I starve? must you starve? must she starve? must we starve? must you starve? must they starve?
V-ing form
must I be starving? must you be starving? must she be starving? must we be starving? must you be starving? must they be starving?
Perfect
must I have starved? must you have starved? must she have starved? must we have starved? must you have starved? must they have starved?
V-ing perfect
must I have been starving? must you have been starving? must she have been starving? must we have been starving? must you have been starving? must they have been starving?
Interro-negative form
Simple form
must I not starve? must you not starve? must she not starve? must we not starve? must you not starve? must they not starve?
V-ing form
must I not be starving? must you not be starving? must she not be starving? must we not be starving? must you not be starving? must they not be starving?
Perfect
must I not have starved? must you not have starved? must she not have starved? must we not have starved? must you not have starved? must they not have starved?
V-ing perfect
must I not have been starving? must you not have been starving? must she not have been starving? must we not have been starving? must you not have been starving? must they not have been starving?