English verb conjugation
MUST STAVE

Irregular verb: stave - staved, stove - staved, stove

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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

Negation

Simple form	V-ing form
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
Perfect	V-ing perfect
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

Interrogative form

Simple form	V-ing form
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?
Perfect	V-ing perfect
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?

Interro-negative form

Simple form	V-ing form
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?
Perfect	V-ing perfect
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?