English verb conjugation
MUST SHEAVE

Regular verb: sheave - sheaved - sheaved

Affirmation

Simple form	V-ing form
I must sheave you must sheave he must sheave we must sheave you must sheave they must sheave	I must be sheaving you must be sheaving he must be sheaving we must be sheaving you must be sheaving they must be sheaving
Perfect	V-ing perfect
I must have sheaved you must have sheaved he must have sheaved we must have sheaved you must have sheaved they must have sheaved	I must have been sheaving you must have been sheaving he must have been sheaving we must have been sheaving you must have been sheaving they must have been sheaving

Negation

Simple form	V-ing form
I must not sheave you must not sheave he must not sheave we must not sheave you must not sheave they must not sheave	I must not be sheaving you must not be sheaving he must not be sheaving we must not be sheaving you must not be sheaving they must not be sheaving
Perfect	V-ing perfect
I must not have sheaved you must not have sheaved he must not have sheaved we must not have sheaved you must not have sheaved they must not have sheaved	I must not have been sheaving you must not have been sheaving he must not have been sheaving we must not have been sheaving you must not have been sheaving they must not have been sheaving

Interrogative form

Simple form	V-ing form
must I sheave? must you sheave? must he sheave? must we sheave? must you sheave? must they sheave?	must I be sheaving? must you be sheaving? must he be sheaving? must we be sheaving? must you be sheaving? must they be sheaving?
Perfect	V-ing perfect
must I have sheaved? must you have sheaved? must he have sheaved? must we have sheaved? must you have sheaved? must they have sheaved?	must I have been sheaving? must you have been sheaving? must he have been sheaving? must we have been sheaving? must you have been sheaving? must they have been sheaving?

Interro-negative form

Simple form	V-ing form
must I not sheave? must you not sheave? must he not sheave? must we not sheave? must you not sheave? must they not sheave?	must I not be sheaving? must you not be sheaving? must he not be sheaving? must we not be sheaving? must you not be sheaving? must they not be sheaving?
Perfect	V-ing perfect
must I not have sheaved? must you not have sheaved? must he not have sheaved? must we not have sheaved? must you not have sheaved? must they not have sheaved?	must I not have been sheaving? must you not have been sheaving? must he not have been sheaving? must we not have been sheaving? must you not have been sheaving? must they not have been sheaving?