must irritate
Regular verb: irritate - irritated- irritated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must irritate
you must irritate
he must irritate
we must irritate
you must irritate
they must irritate 	I must be irritating
you must be irritating
he must be irritating
we must be irritating
you must be irritating
they must be irritating	I must have irritated
you must have irritated
he must have irritated
we must have irritated
you must have irritated
they must have irritated	I must have been irritating
you must have been irritating
he must have been irritating
we must have been irritating
you must have been irritating
they must have been irritating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not irritate
you must not irritate
he must not irritate
we must not irritate
you must not irritate
they must not irritate 	I must not be irritating
you must not be irritating
he must not be irritating
we must not be irritating
you must not be irritating
they must not be irritating	I must not have irritated
you must not have irritated
he must not have irritated
we must not have irritated
you must not have irritated
they must not have irritated	I must not have been irritating
you must not have been irritating
he must not have been irritating
we must not have been irritating
you must not have been irritating
they must not have been irritating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I irritate?
must you irritate?
must he irritate?
must we irritate?
must you irritate?
must they irritate? 	must I be irritating?
must you be irritating?
must he be irritating?
must we be irritating?
must you be irritating?
must they be irritating? 	must I have irritated?
must you have irritated?
must he have irritated?
must we have irritated?
must you have irritated?
must they have irritated? 	must I have been irritating?
must you have been irritating?
must he have been irritating?
must we have been irritating?
must you have been irritating?
must they have been irritating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not irritate?
must you not irritate?
must he not irritate?
must we not irritate?
must you not irritate?
must they not irritate? 	must I not be irritating?
must you not be irritating?
must he not be irritating?
must we not be irritating?
must you not be irritating?
must they not be irritating? 	must I not have irritated?
must you not have irritated?
must he not have irritated?
must we not have irritated?
must you not have irritated?
must they not have irritated? 	must I not have been irritating?
must you not have been irritating?
must he not have been irritating?
must we not have been irritating?
must you not have been irritating?
must they not have been irritating?