English verb conjugation
MUST HICCUP

Regular verb: hiccup - hiccupped - hiccupped

Affirmation

Simple form	V-ing form
I must hiccup you must hiccup she must hiccup we must hiccup you must hiccup they must hiccup	I must be hiccupping you must be hiccupping she must be hiccupping we must be hiccupping you must be hiccupping they must be hiccupping
Perfect	V-ing perfect
I must have hiccupped you must have hiccupped she must have hiccupped we must have hiccupped you must have hiccupped they must have hiccupped	I must have been hiccupping you must have been hiccupping she must have been hiccupping we must have been hiccupping you must have been hiccupping they must have been hiccupping

Negation

Simple form	V-ing form
I mustn't hiccup you mustn't hiccup she mustn't hiccup we mustn't hiccup you mustn't hiccup they mustn't hiccup	I mustn't be hiccupping you mustn't be hiccupping she mustn't be hiccupping we mustn't be hiccupping you mustn't be hiccupping they mustn't be hiccupping
Perfect	V-ing perfect
I mustn't have hiccupped you mustn't have hiccupped she mustn't have hiccupped we mustn't have hiccupped you mustn't have hiccupped they mustn't have hiccupped	I mustn't have been hiccupping you mustn't have been hiccupping she mustn't have been hiccupping we mustn't have been hiccupping you mustn't have been hiccupping they mustn't have been hiccupping

Interrogative form

Simple form	V-ing form
must I hiccup? must you hiccup? must she hiccup? must we hiccup? must you hiccup? must they hiccup?	must I be hiccupping? must you be hiccupping? must she be hiccupping? must we be hiccupping? must you be hiccupping? must they be hiccupping?
Perfect	V-ing perfect
must I have hiccupped? must you have hiccupped? must she have hiccupped? must we have hiccupped? must you have hiccupped? must they have hiccupped?	must I have been hiccupping? must you have been hiccupping? must she have been hiccupping? must we have been hiccupping? must you have been hiccupping? must they have been hiccupping?

Interro-negative form

Simple form	V-ing form
mustn't I hiccup? mustn't you hiccup? mustn't she hiccup? mustn't we hiccup? mustn't you hiccup? mustn't they hiccup?	mustn't I be hiccupping? mustn't you be hiccupping? mustn't she be hiccupping? mustn't we be hiccupping? mustn't you be hiccupping? mustn't they be hiccupping?
Perfect	V-ing perfect
mustn't I have hiccupped? mustn't you have hiccupped? mustn't she have hiccupped? mustn't we have hiccupped? mustn't you have hiccupped? mustn't they have hiccupped?	mustn't I have been hiccupping? mustn't you have been hiccupping? mustn't she have been hiccupping? mustn't we have been hiccupping? mustn't you have been hiccupping? mustn't they have been hiccupping?