must striate
Regular verb: striate - striated- striated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must striate
you must striate
he must striate
we must striate
you must striate
they must striate 	I must be striating
you must be striating
he must be striating
we must be striating
you must be striating
they must be striating	I must have striated
you must have striated
he must have striated
we must have striated
you must have striated
they must have striated	I must have been striating
you must have been striating
he must have been striating
we must have been striating
you must have been striating
they must have been striating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not striate
you must not striate
he must not striate
we must not striate
you must not striate
they must not striate 	I must not be striating
you must not be striating
he must not be striating
we must not be striating
you must not be striating
they must not be striating	I must not have striated
you must not have striated
he must not have striated
we must not have striated
you must not have striated
they must not have striated	I must not have been striating
you must not have been striating
he must not have been striating
we must not have been striating
you must not have been striating
they must not have been striating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I striate?
must you striate?
must he striate?
must we striate?
must you striate?
must they striate? 	must I be striating?
must you be striating?
must he be striating?
must we be striating?
must you be striating?
must they be striating? 	must I have striated?
must you have striated?
must he have striated?
must we have striated?
must you have striated?
must they have striated? 	must I have been striating?
must you have been striating?
must he have been striating?
must we have been striating?
must you have been striating?
must they have been striating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not striate?
must you not striate?
must he not striate?
must we not striate?
must you not striate?
must they not striate? 	must I not be striating?
must you not be striating?
must he not be striating?
must we not be striating?
must you not be striating?
must they not be striating? 	must I not have striated?
must you not have striated?
must he not have striated?
must we not have striated?
must you not have striated?
must they not have striated? 	must I not have been striating?
must you not have been striating?
must he not have been striating?
must we not have been striating?
must you not have been striating?
must they not have been striating?