must enamel
Verbo regular: enamel - enamelled- enamelled

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must enamel
you must enamel
he must enamel
we must enamel
you must enamel
they must enamel 	I must be enamelling
you must be enamelling
he must be enamelling
we must be enamelling
you must be enamelling
they must be enamelling	I must have enamelled
you must have enamelled
he must have enamelled
we must have enamelled
you must have enamelled
they must have enamelled	I must have been enamelling
you must have been enamelling
he must have been enamelling
we must have been enamelling
you must have been enamelling
they must have been enamelling	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not enamel
you must not enamel
he must not enamel
we must not enamel
you must not enamel
they must not enamel 	I must not be enamelling
you must not be enamelling
he must not be enamelling
we must not be enamelling
you must not be enamelling
they must not be enamelling	I must not have enamelled
you must not have enamelled
he must not have enamelled
we must not have enamelled
you must not have enamelled
they must not have enamelled	I must not have been enamelling
you must not have been enamelling
he must not have been enamelling
we must not have been enamelling
you must not have been enamelling
they must not have been enamelling	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I enamel?
must you enamel?
must he enamel?
must we enamel?
must you enamel?
must they enamel? 	must I be enamelling?
must you be enamelling?
must he be enamelling?
must we be enamelling?
must you be enamelling?
must they be enamelling? 	must I have enamelled?
must you have enamelled?
must he have enamelled?
must we have enamelled?
must you have enamelled?
must they have enamelled? 	must I have been enamelling?
must you have been enamelling?
must he have been enamelling?
must we have been enamelling?
must you have been enamelling?
must they have been enamelling? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not enamel?
must you not enamel?
must he not enamel?
must we not enamel?
must you not enamel?
must they not enamel? 	must I not be enamelling?
must you not be enamelling?
must he not be enamelling?
must we not be enamelling?
must you not be enamelling?
must they not be enamelling? 	must I not have enamelled?
must you not have enamelled?
must he not have enamelled?
must we not have enamelled?
must you not have enamelled?
must they not have enamelled? 	must I not have been enamelling?
must you not have been enamelling?
must he not have been enamelling?
must we not have been enamelling?
must you not have been enamelling?
must they not have been enamelling?