must cluck
Verbo regular: cluck - clucked- clucked

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must cluck
you must cluck
she must cluck
we must cluck
you must cluck
they must cluck 	I must be clucking
you must be clucking
she must be clucking
we must be clucking
you must be clucking
they must be clucking	I must have clucked
you must have clucked
she must have clucked
we must have clucked
you must have clucked
they must have clucked	I must have been clucking
you must have been clucking
she must have been clucking
we must have been clucking
you must have been clucking
they must have been clucking	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not cluck
you must not cluck
she must not cluck
we must not cluck
you must not cluck
they must not cluck 	I must not be clucking
you must not be clucking
she must not be clucking
we must not be clucking
you must not be clucking
they must not be clucking	I must not have clucked
you must not have clucked
she must not have clucked
we must not have clucked
you must not have clucked
they must not have clucked	I must not have been clucking
you must not have been clucking
she must not have been clucking
we must not have been clucking
you must not have been clucking
they must not have been clucking	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I cluck?
must you cluck?
must she cluck?
must we cluck?
must you cluck?
must they cluck? 	must I be clucking?
must you be clucking?
must she be clucking?
must we be clucking?
must you be clucking?
must they be clucking? 	must I have clucked?
must you have clucked?
must she have clucked?
must we have clucked?
must you have clucked?
must they have clucked? 	must I have been clucking?
must you have been clucking?
must she have been clucking?
must we have been clucking?
must you have been clucking?
must they have been clucking? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not cluck?
must you not cluck?
must she not cluck?
must we not cluck?
must you not cluck?
must they not cluck? 	must I not be clucking?
must you not be clucking?
must she not be clucking?
must we not be clucking?
must you not be clucking?
must they not be clucking? 	must I not have clucked?
must you not have clucked?
must she not have clucked?
must we not have clucked?
must you not have clucked?
must they not have clucked? 	must I not have been clucking?
must you not have been clucking?
must she not have been clucking?
must we not have been clucking?
must you not have been clucking?
must they not have been clucking?