could irritate
Regular verb: irritate - irritated- irritated

Affirmation 	
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I could irritate
you could irritate
she could irritate
we could irritate
you could irritate
they could irritate 	I could be irritating
you could be irritating
she could be irritating
we could be irritating
you could be irritating
they could be irritating	I could have irritated
you could have irritated
she could have irritated
we could have irritated
you could have irritated
they could have irritated	I could have been irritating
you could have been irritating
she could have been irritating
we could have been irritating
you could have been irritating
they could have been irritating	

Negation 	
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I could not irritate
you could not irritate
she could not irritate
we could not irritate
you could not irritate
they could not irritate 	I could not be irritating
you could not be irritating
she could not be irritating
we could not be irritating
you could not be irritating
they could not be irritating	I could not have irritated
you could not have irritated
she could not have irritated
we could not have irritated
you could not have irritated
they could not have irritated	I could not have been irritating
you could not have been irritating
she could not have been irritating
we could not have been irritating
you could not have been irritating
they could not have been irritating	

Interrogative form 	
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could I irritate?
could you irritate?
could she irritate?
could we irritate?
could you irritate?
could they irritate? 	could I be irritating?
could you be irritating?
could she be irritating?
could we be irritating?
could you be irritating?
could they be irritating? 	could I have irritated?
could you have irritated?
could she have irritated?
could we have irritated?
could you have irritated?
could they have irritated? 	could I have been irritating?
could you have been irritating?
could she have been irritating?
could we have been irritating?
could you have been irritating?
could they have been irritating? 	

Interro-negative form 	
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could I not irritate?
could you not irritate?
could she not irritate?
could we not irritate?
could you not irritate?
could they not irritate? 	could I not be irritating?
could you not be irritating?
could she not be irritating?
could we not be irritating?
could you not be irritating?
could they not be irritating? 	could I not have irritated?
could you not have irritated?
could she not have irritated?
could we not have irritated?
could you not have irritated?
could they not have irritated? 	could I not have been irritating?
could you not have been irritating?
could she not have been irritating?
could we not have been irritating?
could you not have been irritating?
could they not have been irritating?