I must cohabit you must cohabit she must cohabit we must cohabit you must cohabit they must cohabit
V-ing form
I must be cohabiting you must be cohabiting she must be cohabiting we must be cohabiting you must be cohabiting they must be cohabiting
Perfect
I must have cohabited you must have cohabited she must have cohabited we must have cohabited you must have cohabited they must have cohabited
V-ing perfect
I must have been cohabiting you must have been cohabiting she must have been cohabiting we must have been cohabiting you must have been cohabiting they must have been cohabiting
Negation
Simple form
I must not cohabit you must not cohabit she must not cohabit we must not cohabit you must not cohabit they must not cohabit
V-ing form
I must not be cohabiting you must not be cohabiting she must not be cohabiting we must not be cohabiting you must not be cohabiting they must not be cohabiting
Perfect
I must not have cohabited you must not have cohabited she must not have cohabited we must not have cohabited you must not have cohabited they must not have cohabited
V-ing perfect
I must not have been cohabiting you must not have been cohabiting she must not have been cohabiting we must not have been cohabiting you must not have been cohabiting they must not have been cohabiting
Interrogative form
Simple form
must I cohabit? must you cohabit? must she cohabit? must we cohabit? must you cohabit? must they cohabit?
V-ing form
must I be cohabiting? must you be cohabiting? must she be cohabiting? must we be cohabiting? must you be cohabiting? must they be cohabiting?
Perfect
must I have cohabited? must you have cohabited? must she have cohabited? must we have cohabited? must you have cohabited? must they have cohabited?
V-ing perfect
must I have been cohabiting? must you have been cohabiting? must she have been cohabiting? must we have been cohabiting? must you have been cohabiting? must they have been cohabiting?
Interro-negative form
Simple form
must I not cohabit? must you not cohabit? must she not cohabit? must we not cohabit? must you not cohabit? must they not cohabit?
V-ing form
must I not be cohabiting? must you not be cohabiting? must she not be cohabiting? must we not be cohabiting? must you not be cohabiting? must they not be cohabiting?
Perfect
must I not have cohabited? must you not have cohabited? must she not have cohabited? must we not have cohabited? must you not have cohabited? must they not have cohabited?
V-ing perfect
must I not have been cohabiting? must you not have been cohabiting? must she not have been cohabiting? must we not have been cohabiting? must you not have been cohabiting? must they not have been cohabiting?