must silk
Verbo regular: silk - silked- silked

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must silk
you must silk
he must silk
we must silk
you must silk
they must silk 	I must be silking
you must be silking
he must be silking
we must be silking
you must be silking
they must be silking	I must have silked
you must have silked
he must have silked
we must have silked
you must have silked
they must have silked	I must have been silking
you must have been silking
he must have been silking
we must have been silking
you must have been silking
they must have been silking	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not silk
you must not silk
he must not silk
we must not silk
you must not silk
they must not silk 	I must not be silking
you must not be silking
he must not be silking
we must not be silking
you must not be silking
they must not be silking	I must not have silked
you must not have silked
he must not have silked
we must not have silked
you must not have silked
they must not have silked	I must not have been silking
you must not have been silking
he must not have been silking
we must not have been silking
you must not have been silking
they must not have been silking	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I silk?
must you silk?
must he silk?
must we silk?
must you silk?
must they silk? 	must I be silking?
must you be silking?
must he be silking?
must we be silking?
must you be silking?
must they be silking? 	must I have silked?
must you have silked?
must he have silked?
must we have silked?
must you have silked?
must they have silked? 	must I have been silking?
must you have been silking?
must he have been silking?
must we have been silking?
must you have been silking?
must they have been silking? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not silk?
must you not silk?
must he not silk?
must we not silk?
must you not silk?
must they not silk? 	must I not be silking?
must you not be silking?
must he not be silking?
must we not be silking?
must you not be silking?
must they not be silking? 	must I not have silked?
must you not have silked?
must he not have silked?
must we not have silked?
must you not have silked?
must they not have silked? 	must I not have been silking?
must you not have been silking?
must he not have been silking?
must we not have been silking?
must you not have been silking?
must they not have been silking?