English verb conjugation
MUST HAP

Regular verb: hap - haped - haped

Affirmation

Simple form	V-ing form
I must hap you must hap she must hap we must hap you must hap they must hap	I must be haping you must be haping she must be haping we must be haping you must be haping they must be haping
Perfect	V-ing perfect
I must have haped you must have haped she must have haped we must have haped you must have haped they must have haped	I must have been haping you must have been haping she must have been haping we must have been haping you must have been haping they must have been haping

Negation

Simple form	V-ing form
I must not hap you must not hap she must not hap we must not hap you must not hap they must not hap	I must not be haping you must not be haping she must not be haping we must not be haping you must not be haping they must not be haping
Perfect	V-ing perfect
I must not have haped you must not have haped she must not have haped we must not have haped you must not have haped they must not have haped	I must not have been haping you must not have been haping she must not have been haping we must not have been haping you must not have been haping they must not have been haping

Interrogative form

Simple form	V-ing form
must I hap? must you hap? must she hap? must we hap? must you hap? must they hap?	must I be haping? must you be haping? must she be haping? must we be haping? must you be haping? must they be haping?
Perfect	V-ing perfect
must I have haped? must you have haped? must she have haped? must we have haped? must you have haped? must they have haped?	must I have been haping? must you have been haping? must she have been haping? must we have been haping? must you have been haping? must they have been haping?

Interro-negative form

Simple form	V-ing form
must I not hap? must you not hap? must she not hap? must we not hap? must you not hap? must they not hap?	must I not be haping? must you not be haping? must she not be haping? must we not be haping? must you not be haping? must they not be haping?
Perfect	V-ing perfect
must I not have haped? must you not have haped? must she not have haped? must we not have haped? must you not have haped? must they not have haped?	must I not have been haping? must you not have been haping? must she not have been haping? must we not have been haping? must you not have been haping? must they not have been haping?