English verb conjugation
MUST HICCOUGH

Regular verb: hiccough - hiccoughed - hiccoughed

Affirmation

Simple form	V-ing form
I must hiccough you must hiccough she must hiccough we must hiccough you must hiccough they must hiccough	I must be hiccoughing you must be hiccoughing she must be hiccoughing we must be hiccoughing you must be hiccoughing they must be hiccoughing
Perfect	V-ing perfect
I must have hiccoughed you must have hiccoughed she must have hiccoughed we must have hiccoughed you must have hiccoughed they must have hiccoughed	I must have been hiccoughing you must have been hiccoughing she must have been hiccoughing we must have been hiccoughing you must have been hiccoughing they must have been hiccoughing

Negation

Simple form	V-ing form
I must not hiccough you must not hiccough she must not hiccough we must not hiccough you must not hiccough they must not hiccough	I must not be hiccoughing you must not be hiccoughing she must not be hiccoughing we must not be hiccoughing you must not be hiccoughing they must not be hiccoughing
Perfect	V-ing perfect
I must not have hiccoughed you must not have hiccoughed she must not have hiccoughed we must not have hiccoughed you must not have hiccoughed they must not have hiccoughed	I must not have been hiccoughing you must not have been hiccoughing she must not have been hiccoughing we must not have been hiccoughing you must not have been hiccoughing they must not have been hiccoughing

Interrogative form

Simple form	V-ing form
must I hiccough? must you hiccough? must she hiccough? must we hiccough? must you hiccough? must they hiccough?	must I be hiccoughing? must you be hiccoughing? must she be hiccoughing? must we be hiccoughing? must you be hiccoughing? must they be hiccoughing?
Perfect	V-ing perfect
must I have hiccoughed? must you have hiccoughed? must she have hiccoughed? must we have hiccoughed? must you have hiccoughed? must they have hiccoughed?	must I have been hiccoughing? must you have been hiccoughing? must she have been hiccoughing? must we have been hiccoughing? must you have been hiccoughing? must they have been hiccoughing?

Interro-negative form

Simple form	V-ing form
must I not hiccough? must you not hiccough? must she not hiccough? must we not hiccough? must you not hiccough? must they not hiccough?	must I not be hiccoughing? must you not be hiccoughing? must she not be hiccoughing? must we not be hiccoughing? must you not be hiccoughing? must they not be hiccoughing?
Perfect	V-ing perfect
must I not have hiccoughed? must you not have hiccoughed? must she not have hiccoughed? must we not have hiccoughed? must you not have hiccoughed? must they not have hiccoughed?	must I not have been hiccoughing? must you not have been hiccoughing? must she not have been hiccoughing? must we not have been hiccoughing? must you not have been hiccoughing? must they not have been hiccoughing?