must blackjack
Regular verb: blackjack - blackjacked- blackjacked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must blackjack
you must blackjack
she must blackjack
we must blackjack
you must blackjack
they must blackjack 	I must be blackjacking
you must be blackjacking
she must be blackjacking
we must be blackjacking
you must be blackjacking
they must be blackjacking	I must have blackjacked
you must have blackjacked
she must have blackjacked
we must have blackjacked
you must have blackjacked
they must have blackjacked	I must have been blackjacking
you must have been blackjacking
she must have been blackjacking
we must have been blackjacking
you must have been blackjacking
they must have been blackjacking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't blackjack
you mustn't blackjack
she mustn't blackjack
we mustn't blackjack
you mustn't blackjack
they mustn't blackjack 	I mustn't be blackjacking
you mustn't be blackjacking
she mustn't be blackjacking
we mustn't be blackjacking
you mustn't be blackjacking
they mustn't be blackjacking	I mustn't have blackjacked
you mustn't have blackjacked
she mustn't have blackjacked
we mustn't have blackjacked
you mustn't have blackjacked
they mustn't have blackjacked	I mustn't have been blackjacking
you mustn't have been blackjacking
she mustn't have been blackjacking
we mustn't have been blackjacking
you mustn't have been blackjacking
they mustn't have been blackjacking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I blackjack?
must you blackjack?
must she blackjack?
must we blackjack?
must you blackjack?
must they blackjack? 	must I be blackjacking?
must you be blackjacking?
must she be blackjacking?
must we be blackjacking?
must you be blackjacking?
must they be blackjacking? 	must I have blackjacked?
must you have blackjacked?
must she have blackjacked?
must we have blackjacked?
must you have blackjacked?
must they have blackjacked? 	must I have been blackjacking?
must you have been blackjacking?
must she have been blackjacking?
must we have been blackjacking?
must you have been blackjacking?
must they have been blackjacking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I blackjack?
mustn't you blackjack?
mustn't she blackjack?
mustn't we blackjack?
mustn't you blackjack?
mustn't they blackjack? 	mustn't I be blackjacking?
mustn't you be blackjacking?
mustn't she be blackjacking?
mustn't we be blackjacking?
mustn't you be blackjacking?
mustn't they be blackjacking? 	mustn't I have blackjacked?
mustn't you have blackjacked?
mustn't she have blackjacked?
mustn't we have blackjacked?
mustn't you have blackjacked?
mustn't they have blackjacked? 	mustn't I have been blackjacking?
mustn't you have been blackjacking?
mustn't she have been blackjacking?
mustn't we have been blackjacking?
mustn't you have been blackjacking?
mustn't they have been blackjacking?