must multiply
Regular verb: multiply - multiplied- multiplied

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must multiply
you must multiply
he must multiply
we must multiply
you must multiply
they must multiply 	I must be multiplying
you must be multiplying
he must be multiplying
we must be multiplying
you must be multiplying
they must be multiplying	I must have multiplied
you must have multiplied
he must have multiplied
we must have multiplied
you must have multiplied
they must have multiplied	I must have been multiplying
you must have been multiplying
he must have been multiplying
we must have been multiplying
you must have been multiplying
they must have been multiplying	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not multiply
you must not multiply
he must not multiply
we must not multiply
you must not multiply
they must not multiply 	I must not be multiplying
you must not be multiplying
he must not be multiplying
we must not be multiplying
you must not be multiplying
they must not be multiplying	I must not have multiplied
you must not have multiplied
he must not have multiplied
we must not have multiplied
you must not have multiplied
they must not have multiplied	I must not have been multiplying
you must not have been multiplying
he must not have been multiplying
we must not have been multiplying
you must not have been multiplying
they must not have been multiplying	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I multiply?
must you multiply?
must he multiply?
must we multiply?
must you multiply?
must they multiply? 	must I be multiplying?
must you be multiplying?
must he be multiplying?
must we be multiplying?
must you be multiplying?
must they be multiplying? 	must I have multiplied?
must you have multiplied?
must he have multiplied?
must we have multiplied?
must you have multiplied?
must they have multiplied? 	must I have been multiplying?
must you have been multiplying?
must he have been multiplying?
must we have been multiplying?
must you have been multiplying?
must they have been multiplying? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not multiply?
must you not multiply?
must he not multiply?
must we not multiply?
must you not multiply?
must they not multiply? 	must I not be multiplying?
must you not be multiplying?
must he not be multiplying?
must we not be multiplying?
must you not be multiplying?
must they not be multiplying? 	must I not have multiplied?
must you not have multiplied?
must he not have multiplied?
must we not have multiplied?
must you not have multiplied?
must they not have multiplied? 	must I not have been multiplying?
must you not have been multiplying?
must he not have been multiplying?
must we not have been multiplying?
must you not have been multiplying?
must they not have been multiplying?