must nitrate
Regular verb: nitrate - nitrated- nitrated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must nitrate
you must nitrate
he must nitrate
we must nitrate
you must nitrate
they must nitrate 	I must be nitrating
you must be nitrating
he must be nitrating
we must be nitrating
you must be nitrating
they must be nitrating	I must have nitrated
you must have nitrated
he must have nitrated
we must have nitrated
you must have nitrated
they must have nitrated	I must have been nitrating
you must have been nitrating
he must have been nitrating
we must have been nitrating
you must have been nitrating
they must have been nitrating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not nitrate
you must not nitrate
he must not nitrate
we must not nitrate
you must not nitrate
they must not nitrate 	I must not be nitrating
you must not be nitrating
he must not be nitrating
we must not be nitrating
you must not be nitrating
they must not be nitrating	I must not have nitrated
you must not have nitrated
he must not have nitrated
we must not have nitrated
you must not have nitrated
they must not have nitrated	I must not have been nitrating
you must not have been nitrating
he must not have been nitrating
we must not have been nitrating
you must not have been nitrating
they must not have been nitrating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I nitrate?
must you nitrate?
must he nitrate?
must we nitrate?
must you nitrate?
must they nitrate? 	must I be nitrating?
must you be nitrating?
must he be nitrating?
must we be nitrating?
must you be nitrating?
must they be nitrating? 	must I have nitrated?
must you have nitrated?
must he have nitrated?
must we have nitrated?
must you have nitrated?
must they have nitrated? 	must I have been nitrating?
must you have been nitrating?
must he have been nitrating?
must we have been nitrating?
must you have been nitrating?
must they have been nitrating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not nitrate?
must you not nitrate?
must he not nitrate?
must we not nitrate?
must you not nitrate?
must they not nitrate? 	must I not be nitrating?
must you not be nitrating?
must he not be nitrating?
must we not be nitrating?
must you not be nitrating?
must they not be nitrating? 	must I not have nitrated?
must you not have nitrated?
must he not have nitrated?
must we not have nitrated?
must you not have nitrated?
must they not have nitrated? 	must I not have been nitrating?
must you not have been nitrating?
must he not have been nitrating?
must we not have been nitrating?
must you not have been nitrating?
must they not have been nitrating?