English verb conjugation
MUST HICCUP

Regular verb: hiccup - hiccupped - hiccupped

Affirmation

Simple form	V-ing form
I must hiccup you must hiccup he must hiccup we must hiccup you must hiccup they must hiccup	I must be hiccupping you must be hiccupping he 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 he 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 he 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 must not hiccup you must not hiccup he must not hiccup we must not hiccup you must not hiccup they must not hiccup	I must not be hiccupping you must not be hiccupping he must not be hiccupping we must not be hiccupping you must not be hiccupping they must not be hiccupping
Perfect	V-ing perfect
I must not have hiccupped you must not have hiccupped he must not have hiccupped we must not have hiccupped you must not have hiccupped they must not have hiccupped	I must not have been hiccupping you must not have been hiccupping he must not have been hiccupping we must not have been hiccupping you must not have been hiccupping they must not have been hiccupping

Interrogative form

Simple form	V-ing form
must I hiccup? must you hiccup? must he hiccup? must we hiccup? must you hiccup? must they hiccup?	must I be hiccupping? must you be hiccupping? must he 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 he 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 he 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
must I not hiccup? must you not hiccup? must he not hiccup? must we not hiccup? must you not hiccup? must they not hiccup?	must I not be hiccupping? must you not be hiccupping? must he not be hiccupping? must we not be hiccupping? must you not be hiccupping? must they not be hiccupping?
Perfect	V-ing perfect
must I not have hiccupped? must you not have hiccupped? must he not have hiccupped? must we not have hiccupped? must you not have hiccupped? must they not have hiccupped?	must I not have been hiccupping? must you not have been hiccupping? must he not have been hiccupping? must we not have been hiccupping? must you not have been hiccupping? must they not have been hiccupping?