must misuse
Regular verb: misuse - misused- misused

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must misuse
you must misuse
she must misuse
we must misuse
you must misuse
they must misuse 	I must be misusing
you must be misusing
she must be misusing
we must be misusing
you must be misusing
they must be misusing	I must have misused
you must have misused
she must have misused
we must have misused
you must have misused
they must have misused	I must have been misusing
you must have been misusing
she must have been misusing
we must have been misusing
you must have been misusing
they must have been misusing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not misuse
you must not misuse
she must not misuse
we must not misuse
you must not misuse
they must not misuse 	I must not be misusing
you must not be misusing
she must not be misusing
we must not be misusing
you must not be misusing
they must not be misusing	I must not have misused
you must not have misused
she must not have misused
we must not have misused
you must not have misused
they must not have misused	I must not have been misusing
you must not have been misusing
she must not have been misusing
we must not have been misusing
you must not have been misusing
they must not have been misusing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I misuse?
must you misuse?
must she misuse?
must we misuse?
must you misuse?
must they misuse? 	must I be misusing?
must you be misusing?
must she be misusing?
must we be misusing?
must you be misusing?
must they be misusing? 	must I have misused?
must you have misused?
must she have misused?
must we have misused?
must you have misused?
must they have misused? 	must I have been misusing?
must you have been misusing?
must she have been misusing?
must we have been misusing?
must you have been misusing?
must they have been misusing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not misuse?
must you not misuse?
must she not misuse?
must we not misuse?
must you not misuse?
must they not misuse? 	must I not be misusing?
must you not be misusing?
must she not be misusing?
must we not be misusing?
must you not be misusing?
must they not be misusing? 	must I not have misused?
must you not have misused?
must she not have misused?
must we not have misused?
must you not have misused?
must they not have misused? 	must I not have been misusing?
must you not have been misusing?
must she not have been misusing?
must we not have been misusing?
must you not have been misusing?
must they not have been misusing?