must outmaster
Regular verb: outmaster - outmastered- outmastered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must outmaster
you must outmaster
she must outmaster
we must outmaster
you must outmaster
they must outmaster 	I must be outmastering
you must be outmastering
she must be outmastering
we must be outmastering
you must be outmastering
they must be outmastering	I must have outmastered
you must have outmastered
she must have outmastered
we must have outmastered
you must have outmastered
they must have outmastered	I must have been outmastering
you must have been outmastering
she must have been outmastering
we must have been outmastering
you must have been outmastering
they must have been outmastering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not outmaster
you must not outmaster
she must not outmaster
we must not outmaster
you must not outmaster
they must not outmaster 	I must not be outmastering
you must not be outmastering
she must not be outmastering
we must not be outmastering
you must not be outmastering
they must not be outmastering	I must not have outmastered
you must not have outmastered
she must not have outmastered
we must not have outmastered
you must not have outmastered
they must not have outmastered	I must not have been outmastering
you must not have been outmastering
she must not have been outmastering
we must not have been outmastering
you must not have been outmastering
they must not have been outmastering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I outmaster?
must you outmaster?
must she outmaster?
must we outmaster?
must you outmaster?
must they outmaster? 	must I be outmastering?
must you be outmastering?
must she be outmastering?
must we be outmastering?
must you be outmastering?
must they be outmastering? 	must I have outmastered?
must you have outmastered?
must she have outmastered?
must we have outmastered?
must you have outmastered?
must they have outmastered? 	must I have been outmastering?
must you have been outmastering?
must she have been outmastering?
must we have been outmastering?
must you have been outmastering?
must they have been outmastering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not outmaster?
must you not outmaster?
must she not outmaster?
must we not outmaster?
must you not outmaster?
must they not outmaster? 	must I not be outmastering?
must you not be outmastering?
must she not be outmastering?
must we not be outmastering?
must you not be outmastering?
must they not be outmastering? 	must I not have outmastered?
must you not have outmastered?
must she not have outmastered?
must we not have outmastered?
must you not have outmastered?
must they not have outmastered? 	must I not have been outmastering?
must you not have been outmastering?
must she not have been outmastering?
must we not have been outmastering?
must you not have been outmastering?
must they not have been outmastering?