must stave
Verbo irregular: stave - staved, stove- staved, stove

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must stave
you must stave
he must stave
we must stave
you must stave
they must stave 	I must be staving
you must be staving
he must be staving
we must be staving
you must be staving
they must be staving	I must have staved, stove
you must have staved, stove
he must have staved, stove
we must have staved, stove
you must have staved, stove
they must have staved, stove	I must have been staving
you must have been staving
he must have been staving
we must have been staving
you must have been staving
they must have been staving	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not stave
you must not stave
he must not stave
we must not stave
you must not stave
they must not stave 	I must not be staving
you must not be staving
he must not be staving
we must not be staving
you must not be staving
they must not be staving	I must not have staved, stove
you must not have staved, stove
he must not have staved, stove
we must not have staved, stove
you must not have staved, stove
they must not have staved, stove	I must not have been staving
you must not have been staving
he must not have been staving
we must not have been staving
you must not have been staving
they must not have been staving	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I stave?
must you stave?
must he stave?
must we stave?
must you stave?
must they stave? 	must I be staving?
must you be staving?
must he be staving?
must we be staving?
must you be staving?
must they be staving? 	must I have staved, stove?
must you have staved, stove?
must he have staved, stove?
must we have staved, stove?
must you have staved, stove?
must they have staved, stove? 	must I have been staving?
must you have been staving?
must he have been staving?
must we have been staving?
must you have been staving?
must they have been staving? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not stave?
must you not stave?
must he not stave?
must we not stave?
must you not stave?
must they not stave? 	must I not be staving?
must you not be staving?
must he not be staving?
must we not be staving?
must you not be staving?
must they not be staving? 	must I not have staved, stove?
must you not have staved, stove?
must he not have staved, stove?
must we not have staved, stove?
must you not have staved, stove?
must they not have staved, stove? 	must I not have been staving?
must you not have been staving?
must he not have been staving?
must we not have been staving?
must you not have been staving?
must they not have been staving?