must marble
Verbo regular: marble - marbled- marbled

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must marble
you must marble
she must marble
we must marble
you must marble
they must marble 	I must be marbling
you must be marbling
she must be marbling
we must be marbling
you must be marbling
they must be marbling	I must have marbled
you must have marbled
she must have marbled
we must have marbled
you must have marbled
they must have marbled	I must have been marbling
you must have been marbling
she must have been marbling
we must have been marbling
you must have been marbling
they must have been marbling	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not marble
you must not marble
she must not marble
we must not marble
you must not marble
they must not marble 	I must not be marbling
you must not be marbling
she must not be marbling
we must not be marbling
you must not be marbling
they must not be marbling	I must not have marbled
you must not have marbled
she must not have marbled
we must not have marbled
you must not have marbled
they must not have marbled	I must not have been marbling
you must not have been marbling
she must not have been marbling
we must not have been marbling
you must not have been marbling
they must not have been marbling	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I marble?
must you marble?
must she marble?
must we marble?
must you marble?
must they marble? 	must I be marbling?
must you be marbling?
must she be marbling?
must we be marbling?
must you be marbling?
must they be marbling? 	must I have marbled?
must you have marbled?
must she have marbled?
must we have marbled?
must you have marbled?
must they have marbled? 	must I have been marbling?
must you have been marbling?
must she have been marbling?
must we have been marbling?
must you have been marbling?
must they have been marbling? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not marble?
must you not marble?
must she not marble?
must we not marble?
must you not marble?
must they not marble? 	must I not be marbling?
must you not be marbling?
must she not be marbling?
must we not be marbling?
must you not be marbling?
must they not be marbling? 	must I not have marbled?
must you not have marbled?
must she not have marbled?
must we not have marbled?
must you not have marbled?
must they not have marbled? 	must I not have been marbling?
must you not have been marbling?
must she not have been marbling?
must we not have been marbling?
must you not have been marbling?
must they not have been marbling?