could striate
Regular verb: striate - striated- striated

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

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't striate
you couldn't striate
he couldn't striate
we couldn't striate
you couldn't striate
they couldn't striate 	I couldn't be striating
you couldn't be striating
he couldn't be striating
we couldn't be striating
you couldn't be striating
they couldn't be striating	I couldn't have striated
you couldn't have striated
he couldn't have striated
we couldn't have striated
you couldn't have striated
they couldn't have striated	I couldn't have been striating
you couldn't have been striating
he couldn't have been striating
we couldn't have been striating
you couldn't have been striating
they couldn't have been striating	

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

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