must misbehave
Regular verb: misbehave - misbehaved- misbehaved

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must misbehave
you must misbehave
she must misbehave
we must misbehave
you must misbehave
they must misbehave 	I must be misbehaving
you must be misbehaving
she must be misbehaving
we must be misbehaving
you must be misbehaving
they must be misbehaving	I must have misbehaved
you must have misbehaved
she must have misbehaved
we must have misbehaved
you must have misbehaved
they must have misbehaved	I must have been misbehaving
you must have been misbehaving
she must have been misbehaving
we must have been misbehaving
you must have been misbehaving
they must have been misbehaving	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not misbehave
you must not misbehave
she must not misbehave
we must not misbehave
you must not misbehave
they must not misbehave 	I must not be misbehaving
you must not be misbehaving
she must not be misbehaving
we must not be misbehaving
you must not be misbehaving
they must not be misbehaving	I must not have misbehaved
you must not have misbehaved
she must not have misbehaved
we must not have misbehaved
you must not have misbehaved
they must not have misbehaved	I must not have been misbehaving
you must not have been misbehaving
she must not have been misbehaving
we must not have been misbehaving
you must not have been misbehaving
they must not have been misbehaving	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I misbehave?
must you misbehave?
must she misbehave?
must we misbehave?
must you misbehave?
must they misbehave? 	must I be misbehaving?
must you be misbehaving?
must she be misbehaving?
must we be misbehaving?
must you be misbehaving?
must they be misbehaving? 	must I have misbehaved?
must you have misbehaved?
must she have misbehaved?
must we have misbehaved?
must you have misbehaved?
must they have misbehaved? 	must I have been misbehaving?
must you have been misbehaving?
must she have been misbehaving?
must we have been misbehaving?
must you have been misbehaving?
must they have been misbehaving? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not misbehave?
must you not misbehave?
must she not misbehave?
must we not misbehave?
must you not misbehave?
must they not misbehave? 	must I not be misbehaving?
must you not be misbehaving?
must she not be misbehaving?
must we not be misbehaving?
must you not be misbehaving?
must they not be misbehaving? 	must I not have misbehaved?
must you not have misbehaved?
must she not have misbehaved?
must we not have misbehaved?
must you not have misbehaved?
must they not have misbehaved? 	must I not have been misbehaving?
must you not have been misbehaving?
must she not have been misbehaving?
must we not have been misbehaving?
must you not have been misbehaving?
must they not have been misbehaving?