must suction
Verbo regular: suction - suctioned- suctioned

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must suction
you must suction
she must suction
we must suction
you must suction
they must suction 	I must be suctioning
you must be suctioning
she must be suctioning
we must be suctioning
you must be suctioning
they must be suctioning	I must have suctioned
you must have suctioned
she must have suctioned
we must have suctioned
you must have suctioned
they must have suctioned	I must have been suctioning
you must have been suctioning
she must have been suctioning
we must have been suctioning
you must have been suctioning
they must have been suctioning	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not suction
you must not suction
she must not suction
we must not suction
you must not suction
they must not suction 	I must not be suctioning
you must not be suctioning
she must not be suctioning
we must not be suctioning
you must not be suctioning
they must not be suctioning	I must not have suctioned
you must not have suctioned
she must not have suctioned
we must not have suctioned
you must not have suctioned
they must not have suctioned	I must not have been suctioning
you must not have been suctioning
she must not have been suctioning
we must not have been suctioning
you must not have been suctioning
they must not have been suctioning	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I suction?
must you suction?
must she suction?
must we suction?
must you suction?
must they suction? 	must I be suctioning?
must you be suctioning?
must she be suctioning?
must we be suctioning?
must you be suctioning?
must they be suctioning? 	must I have suctioned?
must you have suctioned?
must she have suctioned?
must we have suctioned?
must you have suctioned?
must they have suctioned? 	must I have been suctioning?
must you have been suctioning?
must she have been suctioning?
must we have been suctioning?
must you have been suctioning?
must they have been suctioning? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not suction?
must you not suction?
must she not suction?
must we not suction?
must you not suction?
must they not suction? 	must I not be suctioning?
must you not be suctioning?
must she not be suctioning?
must we not be suctioning?
must you not be suctioning?
must they not be suctioning? 	must I not have suctioned?
must you not have suctioned?
must she not have suctioned?
must we not have suctioned?
must you not have suctioned?
must they not have suctioned? 	must I not have been suctioning?
must you not have been suctioning?
must she not have been suctioning?
must we not have been suctioning?
must you not have been suctioning?
must they not have been suctioning?