must blackjack
Regular verb: blackjack - blackjacked- blackjacked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must blackjack
you must blackjack
he must blackjack
we must blackjack
you must blackjack
they must blackjack 	I must be blackjacking
you must be blackjacking
he must be blackjacking
we must be blackjacking
you must be blackjacking
they must be blackjacking	I must have blackjacked
you must have blackjacked
he 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
he 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
he 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
he 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
he 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
he 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 he blackjack?
must we blackjack?
must you blackjack?
must they blackjack? 	must I be blackjacking?
must you be blackjacking?
must he be blackjacking?
must we be blackjacking?
must you be blackjacking?
must they be blackjacking? 	must I have blackjacked?
must you have blackjacked?
must he 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 he 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 he 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 he 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 he 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 he have been blackjacking?
mustn't we have been blackjacking?
mustn't you have been blackjacking?
mustn't they have been blackjacking?