must preplace
Verbo regular: preplace - preplaced- preplaced

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must preplace
you must preplace
he must preplace
we must preplace
you must preplace
they must preplace 	I must be preplacing
you must be preplacing
he must be preplacing
we must be preplacing
you must be preplacing
they must be preplacing	I must have preplaced
you must have preplaced
he must have preplaced
we must have preplaced
you must have preplaced
they must have preplaced	I must have been preplacing
you must have been preplacing
he must have been preplacing
we must have been preplacing
you must have been preplacing
they must have been preplacing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not preplace
you must not preplace
he must not preplace
we must not preplace
you must not preplace
they must not preplace 	I must not be preplacing
you must not be preplacing
he must not be preplacing
we must not be preplacing
you must not be preplacing
they must not be preplacing	I must not have preplaced
you must not have preplaced
he must not have preplaced
we must not have preplaced
you must not have preplaced
they must not have preplaced	I must not have been preplacing
you must not have been preplacing
he must not have been preplacing
we must not have been preplacing
you must not have been preplacing
they must not have been preplacing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I preplace?
must you preplace?
must he preplace?
must we preplace?
must you preplace?
must they preplace? 	must I be preplacing?
must you be preplacing?
must he be preplacing?
must we be preplacing?
must you be preplacing?
must they be preplacing? 	must I have preplaced?
must you have preplaced?
must he have preplaced?
must we have preplaced?
must you have preplaced?
must they have preplaced? 	must I have been preplacing?
must you have been preplacing?
must he have been preplacing?
must we have been preplacing?
must you have been preplacing?
must they have been preplacing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not preplace?
must you not preplace?
must he not preplace?
must we not preplace?
must you not preplace?
must they not preplace? 	must I not be preplacing?
must you not be preplacing?
must he not be preplacing?
must we not be preplacing?
must you not be preplacing?
must they not be preplacing? 	must I not have preplaced?
must you not have preplaced?
must he not have preplaced?
must we not have preplaced?
must you not have preplaced?
must they not have preplaced? 	must I not have been preplacing?
must you not have been preplacing?
must he not have been preplacing?
must we not have been preplacing?
must you not have been preplacing?
must they not have been preplacing?