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 mustn't stave you mustn't stave he mustn't stave we mustn't stave you mustn't stave they mustn't stave	I mustn't be staving you mustn't be staving he mustn't be staving we mustn't be staving you mustn't be staving they mustn't be staving
Perfect	V-ing perfect
I mustn't have staved, stove you mustn't have staved, stove he mustn't have staved, stove we mustn't have staved, stove you mustn't have staved, stove they mustn't have staved, stove	I mustn't have been staving you mustn't have been staving he mustn't have been staving we mustn't have been staving you mustn't have been staving they mustn't 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
mustn't I stave? mustn't you stave? mustn't he stave? mustn't we stave? mustn't you stave? mustn't they stave?	mustn't I be staving? mustn't you be staving? mustn't he be staving? mustn't we be staving? mustn't you be staving? mustn't they be staving?
Perfect	V-ing perfect
mustn't I have staved, stove? mustn't you have staved, stove? mustn't he have staved, stove? mustn't we have staved, stove? mustn't you have staved, stove? mustn't they have staved, stove?	mustn't I have been staving? mustn't you have been staving? mustn't he have been staving? mustn't we have been staving? mustn't you have been staving? mustn't they have been staving?