must couch
Verbo regular: couch - couched- couched

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must couch
you must couch
he must couch
we must couch
you must couch
they must couch 	I must be couching
you must be couching
he must be couching
we must be couching
you must be couching
they must be couching	I must have couched
you must have couched
he must have couched
we must have couched
you must have couched
they must have couched	I must have been couching
you must have been couching
he must have been couching
we must have been couching
you must have been couching
they must have been couching	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not couch
you must not couch
he must not couch
we must not couch
you must not couch
they must not couch 	I must not be couching
you must not be couching
he must not be couching
we must not be couching
you must not be couching
they must not be couching	I must not have couched
you must not have couched
he must not have couched
we must not have couched
you must not have couched
they must not have couched	I must not have been couching
you must not have been couching
he must not have been couching
we must not have been couching
you must not have been couching
they must not have been couching	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I couch?
must you couch?
must he couch?
must we couch?
must you couch?
must they couch? 	must I be couching?
must you be couching?
must he be couching?
must we be couching?
must you be couching?
must they be couching? 	must I have couched?
must you have couched?
must he have couched?
must we have couched?
must you have couched?
must they have couched? 	must I have been couching?
must you have been couching?
must he have been couching?
must we have been couching?
must you have been couching?
must they have been couching? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not couch?
must you not couch?
must he not couch?
must we not couch?
must you not couch?
must they not couch? 	must I not be couching?
must you not be couching?
must he not be couching?
must we not be couching?
must you not be couching?
must they not be couching? 	must I not have couched?
must you not have couched?
must he not have couched?
must we not have couched?
must you not have couched?
must they not have couched? 	must I not have been couching?
must you not have been couching?
must he not have been couching?
must we not have been couching?
must you not have been couching?
must they not have been couching?