English verb conjugation
MUST SUBMARINE

Regular verb: submarine - submarined - submarined

Affirmation

Simple form	V-ing form
I must submarine you must submarine he must submarine we must submarine you must submarine they must submarine	I must be submarining you must be submarining he must be submarining we must be submarining you must be submarining they must be submarining
Perfect	V-ing perfect
I must have submarined you must have submarined he must have submarined we must have submarined you must have submarined they must have submarined	I must have been submarining you must have been submarining he must have been submarining we must have been submarining you must have been submarining they must have been submarining

Negation

Simple form	V-ing form
I must not submarine you must not submarine he must not submarine we must not submarine you must not submarine they must not submarine	I must not be submarining you must not be submarining he must not be submarining we must not be submarining you must not be submarining they must not be submarining
Perfect	V-ing perfect
I must not have submarined you must not have submarined he must not have submarined we must not have submarined you must not have submarined they must not have submarined	I must not have been submarining you must not have been submarining he must not have been submarining we must not have been submarining you must not have been submarining they must not have been submarining

Interrogative form

Simple form	V-ing form
must I submarine? must you submarine? must he submarine? must we submarine? must you submarine? must they submarine?	must I be submarining? must you be submarining? must he be submarining? must we be submarining? must you be submarining? must they be submarining?
Perfect	V-ing perfect
must I have submarined? must you have submarined? must he have submarined? must we have submarined? must you have submarined? must they have submarined?	must I have been submarining? must you have been submarining? must he have been submarining? must we have been submarining? must you have been submarining? must they have been submarining?

Interro-negative form

Simple form	V-ing form
must I not submarine? must you not submarine? must he not submarine? must we not submarine? must you not submarine? must they not submarine?	must I not be submarining? must you not be submarining? must he not be submarining? must we not be submarining? must you not be submarining? must they not be submarining?
Perfect	V-ing perfect
must I not have submarined? must you not have submarined? must he not have submarined? must we not have submarined? must you not have submarined? must they not have submarined?	must I not have been submarining? must you not have been submarining? must he not have been submarining? must we not have been submarining? must you not have been submarining? must they not have been submarining?