English verb conjugation
MUST UNABLE

Regular verb: unable - unabled - unabled

Affirmation

Simple form	V-ing form
I must unable you must unable she must unable we must unable you must unable they must unable	I must be unabling you must be unabling she must be unabling we must be unabling you must be unabling they must be unabling
Perfect	V-ing perfect
I must have unabled you must have unabled she must have unabled we must have unabled you must have unabled they must have unabled	I must have been unabling you must have been unabling she must have been unabling we must have been unabling you must have been unabling they must have been unabling

Negation

Simple form	V-ing form
I must not unable you must not unable she must not unable we must not unable you must not unable they must not unable	I must not be unabling you must not be unabling she must not be unabling we must not be unabling you must not be unabling they must not be unabling
Perfect	V-ing perfect
I must not have unabled you must not have unabled she must not have unabled we must not have unabled you must not have unabled they must not have unabled	I must not have been unabling you must not have been unabling she must not have been unabling we must not have been unabling you must not have been unabling they must not have been unabling

Interrogative form

Simple form	V-ing form
must I unable? must you unable? must she unable? must we unable? must you unable? must they unable?	must I be unabling? must you be unabling? must she be unabling? must we be unabling? must you be unabling? must they be unabling?
Perfect	V-ing perfect
must I have unabled? must you have unabled? must she have unabled? must we have unabled? must you have unabled? must they have unabled?	must I have been unabling? must you have been unabling? must she have been unabling? must we have been unabling? must you have been unabling? must they have been unabling?

Interro-negative form

Simple form	V-ing form
must I not unable? must you not unable? must she not unable? must we not unable? must you not unable? must they not unable?	must I not be unabling? must you not be unabling? must she not be unabling? must we not be unabling? must you not be unabling? must they not be unabling?
Perfect	V-ing perfect
must I not have unabled? must you not have unabled? must she not have unabled? must we not have unabled? must you not have unabled? must they not have unabled?	must I not have been unabling? must you not have been unabling? must she not have been unabling? must we not have been unabling? must you not have been unabling? must they not have been unabling?