must exsert
Regular verb: exsert - exserted- exserted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must exsert
you must exsert
she must exsert
we must exsert
you must exsert
they must exsert 	I must be exserting
you must be exserting
she must be exserting
we must be exserting
you must be exserting
they must be exserting	I must have exserted
you must have exserted
she must have exserted
we must have exserted
you must have exserted
they must have exserted	I must have been exserting
you must have been exserting
she must have been exserting
we must have been exserting
you must have been exserting
they must have been exserting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not exsert
you must not exsert
she must not exsert
we must not exsert
you must not exsert
they must not exsert 	I must not be exserting
you must not be exserting
she must not be exserting
we must not be exserting
you must not be exserting
they must not be exserting	I must not have exserted
you must not have exserted
she must not have exserted
we must not have exserted
you must not have exserted
they must not have exserted	I must not have been exserting
you must not have been exserting
she must not have been exserting
we must not have been exserting
you must not have been exserting
they must not have been exserting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I exsert?
must you exsert?
must she exsert?
must we exsert?
must you exsert?
must they exsert? 	must I be exserting?
must you be exserting?
must she be exserting?
must we be exserting?
must you be exserting?
must they be exserting? 	must I have exserted?
must you have exserted?
must she have exserted?
must we have exserted?
must you have exserted?
must they have exserted? 	must I have been exserting?
must you have been exserting?
must she have been exserting?
must we have been exserting?
must you have been exserting?
must they have been exserting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not exsert?
must you not exsert?
must she not exsert?
must we not exsert?
must you not exsert?
must they not exsert? 	must I not be exserting?
must you not be exserting?
must she not be exserting?
must we not be exserting?
must you not be exserting?
must they not be exserting? 	must I not have exserted?
must you not have exserted?
must she not have exserted?
must we not have exserted?
must you not have exserted?
must they not have exserted? 	must I not have been exserting?
must you not have been exserting?
must she not have been exserting?
must we not have been exserting?
must you not have been exserting?
must they not have been exserting?