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 mustn't submarine you mustn't submarine he mustn't submarine we mustn't submarine you mustn't submarine they mustn't submarine	I mustn't be submarining you mustn't be submarining he mustn't be submarining we mustn't be submarining you mustn't be submarining they mustn't be submarining
Perfect	V-ing perfect
I mustn't have submarined you mustn't have submarined he mustn't have submarined we mustn't have submarined you mustn't have submarined they mustn't have submarined	I mustn't have been submarining you mustn't have been submarining he mustn't have been submarining we mustn't have been submarining you mustn't have been submarining they mustn't 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
mustn't I submarine? mustn't you submarine? mustn't he submarine? mustn't we submarine? mustn't you submarine? mustn't they submarine?	mustn't I be submarining? mustn't you be submarining? mustn't he be submarining? mustn't we be submarining? mustn't you be submarining? mustn't they be submarining?
Perfect	V-ing perfect
mustn't I have submarined? mustn't you have submarined? mustn't he have submarined? mustn't we have submarined? mustn't you have submarined? mustn't they have submarined?	mustn't I have been submarining? mustn't you have been submarining? mustn't he have been submarining? mustn't we have been submarining? mustn't you have been submarining? mustn't they have been submarining?