must retread
Verbo regular: retread - retreaded- retreaded

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must retread
you must retread
he must retread
we must retread
you must retread
they must retread 	I must be retreading
you must be retreading
he must be retreading
we must be retreading
you must be retreading
they must be retreading	I must have retreaded
you must have retreaded
he must have retreaded
we must have retreaded
you must have retreaded
they must have retreaded	I must have been retreading
you must have been retreading
he must have been retreading
we must have been retreading
you must have been retreading
they must have been retreading	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not retread
you must not retread
he must not retread
we must not retread
you must not retread
they must not retread 	I must not be retreading
you must not be retreading
he must not be retreading
we must not be retreading
you must not be retreading
they must not be retreading	I must not have retreaded
you must not have retreaded
he must not have retreaded
we must not have retreaded
you must not have retreaded
they must not have retreaded	I must not have been retreading
you must not have been retreading
he must not have been retreading
we must not have been retreading
you must not have been retreading
they must not have been retreading	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I retread?
must you retread?
must he retread?
must we retread?
must you retread?
must they retread? 	must I be retreading?
must you be retreading?
must he be retreading?
must we be retreading?
must you be retreading?
must they be retreading? 	must I have retreaded?
must you have retreaded?
must he have retreaded?
must we have retreaded?
must you have retreaded?
must they have retreaded? 	must I have been retreading?
must you have been retreading?
must he have been retreading?
must we have been retreading?
must you have been retreading?
must they have been retreading? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not retread?
must you not retread?
must he not retread?
must we not retread?
must you not retread?
must they not retread? 	must I not be retreading?
must you not be retreading?
must he not be retreading?
must we not be retreading?
must you not be retreading?
must they not be retreading? 	must I not have retreaded?
must you not have retreaded?
must he not have retreaded?
must we not have retreaded?
must you not have retreaded?
must they not have retreaded? 	must I not have been retreading?
must you not have been retreading?
must he not have been retreading?
must we not have been retreading?
must you not have been retreading?
must they not have been retreading?