English verb conjugation
MUST UNABLE

Regular verb: unable - unabled - unabled

Affirmation

Simple form	V-ing form
I must unable you must unable he must unable we must unable you must unable they must unable	I must be unabling you must be unabling he 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 he 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 he 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 mustn't unable you mustn't unable he mustn't unable we mustn't unable you mustn't unable they mustn't unable	I mustn't be unabling you mustn't be unabling he mustn't be unabling we mustn't be unabling you mustn't be unabling they mustn't be unabling
Perfect	V-ing perfect
I mustn't have unabled you mustn't have unabled he mustn't have unabled we mustn't have unabled you mustn't have unabled they mustn't have unabled	I mustn't have been unabling you mustn't have been unabling he mustn't have been unabling we mustn't have been unabling you mustn't have been unabling they mustn't have been unabling

Interrogative form

Simple form	V-ing form
must I unable? must you unable? must he unable? must we unable? must you unable? must they unable?	must I be unabling? must you be unabling? must he 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 he 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 he 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
mustn't I unable? mustn't you unable? mustn't he unable? mustn't we unable? mustn't you unable? mustn't they unable?	mustn't I be unabling? mustn't you be unabling? mustn't he be unabling? mustn't we be unabling? mustn't you be unabling? mustn't they be unabling?
Perfect	V-ing perfect
mustn't I have unabled? mustn't you have unabled? mustn't he have unabled? mustn't we have unabled? mustn't you have unabled? mustn't they have unabled?	mustn't I have been unabling? mustn't you have been unabling? mustn't he have been unabling? mustn't we have been unabling? mustn't you have been unabling? mustn't they have been unabling?