must mangle
Regular verb: mangle - mangled- mangled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must mangle
you must mangle
she must mangle
we must mangle
you must mangle
they must mangle 	I must be mangling
you must be mangling
she must be mangling
we must be mangling
you must be mangling
they must be mangling	I must have mangled
you must have mangled
she must have mangled
we must have mangled
you must have mangled
they must have mangled	I must have been mangling
you must have been mangling
she must have been mangling
we must have been mangling
you must have been mangling
they must have been mangling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not mangle
you must not mangle
she must not mangle
we must not mangle
you must not mangle
they must not mangle 	I must not be mangling
you must not be mangling
she must not be mangling
we must not be mangling
you must not be mangling
they must not be mangling	I must not have mangled
you must not have mangled
she must not have mangled
we must not have mangled
you must not have mangled
they must not have mangled	I must not have been mangling
you must not have been mangling
she must not have been mangling
we must not have been mangling
you must not have been mangling
they must not have been mangling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I mangle?
must you mangle?
must she mangle?
must we mangle?
must you mangle?
must they mangle? 	must I be mangling?
must you be mangling?
must she be mangling?
must we be mangling?
must you be mangling?
must they be mangling? 	must I have mangled?
must you have mangled?
must she have mangled?
must we have mangled?
must you have mangled?
must they have mangled? 	must I have been mangling?
must you have been mangling?
must she have been mangling?
must we have been mangling?
must you have been mangling?
must they have been mangling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not mangle?
must you not mangle?
must she not mangle?
must we not mangle?
must you not mangle?
must they not mangle? 	must I not be mangling?
must you not be mangling?
must she not be mangling?
must we not be mangling?
must you not be mangling?
must they not be mangling? 	must I not have mangled?
must you not have mangled?
must she not have mangled?
must we not have mangled?
must you not have mangled?
must they not have mangled? 	must I not have been mangling?
must you not have been mangling?
must she not have been mangling?
must we not have been mangling?
must you not have been mangling?
must they not have been mangling?