I must habit you must habit he must habit we must habit you must habit they must habit
V-ing form
I must be habiting you must be habiting he must be habiting we must be habiting you must be habiting they must be habiting
Perfect
I must have habited you must have habited he must have habited we must have habited you must have habited they must have habited
V-ing perfect
I must have been habiting you must have been habiting he must have been habiting we must have been habiting you must have been habiting they must have been habiting
Negation
Simple form
I must not habit you must not habit he must not habit we must not habit you must not habit they must not habit
V-ing form
I must not be habiting you must not be habiting he must not be habiting we must not be habiting you must not be habiting they must not be habiting
Perfect
I must not have habited you must not have habited he must not have habited we must not have habited you must not have habited they must not have habited
V-ing perfect
I must not have been habiting you must not have been habiting he must not have been habiting we must not have been habiting you must not have been habiting they must not have been habiting
Interrogative form
Simple form
must I habit? must you habit? must he habit? must we habit? must you habit? must they habit?
V-ing form
must I be habiting? must you be habiting? must he be habiting? must we be habiting? must you be habiting? must they be habiting?
Perfect
must I have habited? must you have habited? must he have habited? must we have habited? must you have habited? must they have habited?
V-ing perfect
must I have been habiting? must you have been habiting? must he have been habiting? must we have been habiting? must you have been habiting? must they have been habiting?
Interro-negative form
Simple form
must I not habit? must you not habit? must he not habit? must we not habit? must you not habit? must they not habit?
V-ing form
must I not be habiting? must you not be habiting? must he not be habiting? must we not be habiting? must you not be habiting? must they not be habiting?
Perfect
must I not have habited? must you not have habited? must he not have habited? must we not have habited? must you not have habited? must they not have habited?
V-ing perfect
must I not have been habiting? must you not have been habiting? must he not have been habiting? must we not have been habiting? must you not have been habiting? must they not have been habiting?