must crisscross
Regular verb: crisscross - crisscrossed- crisscrossed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must crisscross
you must crisscross
he must crisscross
we must crisscross
you must crisscross
they must crisscross 	I must be crisscrossing
you must be crisscrossing
he must be crisscrossing
we must be crisscrossing
you must be crisscrossing
they must be crisscrossing	I must have crisscrossed
you must have crisscrossed
he must have crisscrossed
we must have crisscrossed
you must have crisscrossed
they must have crisscrossed	I must have been crisscrossing
you must have been crisscrossing
he must have been crisscrossing
we must have been crisscrossing
you must have been crisscrossing
they must have been crisscrossing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't crisscross
you mustn't crisscross
he mustn't crisscross
we mustn't crisscross
you mustn't crisscross
they mustn't crisscross 	I mustn't be crisscrossing
you mustn't be crisscrossing
he mustn't be crisscrossing
we mustn't be crisscrossing
you mustn't be crisscrossing
they mustn't be crisscrossing	I mustn't have crisscrossed
you mustn't have crisscrossed
he mustn't have crisscrossed
we mustn't have crisscrossed
you mustn't have crisscrossed
they mustn't have crisscrossed	I mustn't have been crisscrossing
you mustn't have been crisscrossing
he mustn't have been crisscrossing
we mustn't have been crisscrossing
you mustn't have been crisscrossing
they mustn't have been crisscrossing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I crisscross?
must you crisscross?
must he crisscross?
must we crisscross?
must you crisscross?
must they crisscross? 	must I be crisscrossing?
must you be crisscrossing?
must he be crisscrossing?
must we be crisscrossing?
must you be crisscrossing?
must they be crisscrossing? 	must I have crisscrossed?
must you have crisscrossed?
must he have crisscrossed?
must we have crisscrossed?
must you have crisscrossed?
must they have crisscrossed? 	must I have been crisscrossing?
must you have been crisscrossing?
must he have been crisscrossing?
must we have been crisscrossing?
must you have been crisscrossing?
must they have been crisscrossing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I crisscross?
mustn't you crisscross?
mustn't he crisscross?
mustn't we crisscross?
mustn't you crisscross?
mustn't they crisscross? 	mustn't I be crisscrossing?
mustn't you be crisscrossing?
mustn't he be crisscrossing?
mustn't we be crisscrossing?
mustn't you be crisscrossing?
mustn't they be crisscrossing? 	mustn't I have crisscrossed?
mustn't you have crisscrossed?
mustn't he have crisscrossed?
mustn't we have crisscrossed?
mustn't you have crisscrossed?
mustn't they have crisscrossed? 	mustn't I have been crisscrossing?
mustn't you have been crisscrossing?
mustn't he have been crisscrossing?
mustn't we have been crisscrossing?
mustn't you have been crisscrossing?
mustn't they have been crisscrossing?