English verb conjugation
MUST VALVE

Regular verb: valve - valved - valved

Affirmation

Simple form	V-ing form
I must valve you must valve she must valve we must valve you must valve they must valve	I must be valving you must be valving she must be valving we must be valving you must be valving they must be valving
Perfect	V-ing perfect
I must have valved you must have valved she must have valved we must have valved you must have valved they must have valved	I must have been valving you must have been valving she must have been valving we must have been valving you must have been valving they must have been valving

Negation

Simple form	V-ing form
I must not valve you must not valve she must not valve we must not valve you must not valve they must not valve	I must not be valving you must not be valving she must not be valving we must not be valving you must not be valving they must not be valving
Perfect	V-ing perfect
I must not have valved you must not have valved she must not have valved we must not have valved you must not have valved they must not have valved	I must not have been valving you must not have been valving she must not have been valving we must not have been valving you must not have been valving they must not have been valving

Interrogative form

Simple form	V-ing form
must I valve? must you valve? must she valve? must we valve? must you valve? must they valve?	must I be valving? must you be valving? must she be valving? must we be valving? must you be valving? must they be valving?
Perfect	V-ing perfect
must I have valved? must you have valved? must she have valved? must we have valved? must you have valved? must they have valved?	must I have been valving? must you have been valving? must she have been valving? must we have been valving? must you have been valving? must they have been valving?

Interro-negative form

Simple form	V-ing form
must I not valve? must you not valve? must she not valve? must we not valve? must you not valve? must they not valve?	must I not be valving? must you not be valving? must she not be valving? must we not be valving? must you not be valving? must they not be valving?
Perfect	V-ing perfect
must I not have valved? must you not have valved? must she not have valved? must we not have valved? must you not have valved? must they not have valved?	must I not have been valving? must you not have been valving? must she not have been valving? must we not have been valving? must you not have been valving? must they not have been valving?