must sub
Verbo regular: sub - subbed- subbed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must sub
you must sub
she must sub
we must sub
you must sub
they must sub 	I must be subbing
you must be subbing
she must be subbing
we must be subbing
you must be subbing
they must be subbing	I must have subbed
you must have subbed
she must have subbed
we must have subbed
you must have subbed
they must have subbed	I must have been subbing
you must have been subbing
she must have been subbing
we must have been subbing
you must have been subbing
they must have been subbing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not sub
you must not sub
she must not sub
we must not sub
you must not sub
they must not sub 	I must not be subbing
you must not be subbing
she must not be subbing
we must not be subbing
you must not be subbing
they must not be subbing	I must not have subbed
you must not have subbed
she must not have subbed
we must not have subbed
you must not have subbed
they must not have subbed	I must not have been subbing
you must not have been subbing
she must not have been subbing
we must not have been subbing
you must not have been subbing
they must not have been subbing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I sub?
must you sub?
must she sub?
must we sub?
must you sub?
must they sub? 	must I be subbing?
must you be subbing?
must she be subbing?
must we be subbing?
must you be subbing?
must they be subbing? 	must I have subbed?
must you have subbed?
must she have subbed?
must we have subbed?
must you have subbed?
must they have subbed? 	must I have been subbing?
must you have been subbing?
must she have been subbing?
must we have been subbing?
must you have been subbing?
must they have been subbing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not sub?
must you not sub?
must she not sub?
must we not sub?
must you not sub?
must they not sub? 	must I not be subbing?
must you not be subbing?
must she not be subbing?
must we not be subbing?
must you not be subbing?
must they not be subbing? 	must I not have subbed?
must you not have subbed?
must she not have subbed?
must we not have subbed?
must you not have subbed?
must they not have subbed? 	must I not have been subbing?
must you not have been subbing?
must she not have been subbing?
must we not have been subbing?
must you not have been subbing?
must they not have been subbing?