English verb conjugation
MUST STABLE

Regular verb: stable - stabled - stabled

Affirmation

Simple form	V-ing form
I must stable you must stable he must stable we must stable you must stable they must stable	I must be stabling you must be stabling he must be stabling we must be stabling you must be stabling they must be stabling
Perfect	V-ing perfect
I must have stabled you must have stabled he must have stabled we must have stabled you must have stabled they must have stabled	I must have been stabling you must have been stabling he must have been stabling we must have been stabling you must have been stabling they must have been stabling

Negation

Simple form	V-ing form
I mustn't stable you mustn't stable he mustn't stable we mustn't stable you mustn't stable they mustn't stable	I mustn't be stabling you mustn't be stabling he mustn't be stabling we mustn't be stabling you mustn't be stabling they mustn't be stabling
Perfect	V-ing perfect
I mustn't have stabled you mustn't have stabled he mustn't have stabled we mustn't have stabled you mustn't have stabled they mustn't have stabled	I mustn't have been stabling you mustn't have been stabling he mustn't have been stabling we mustn't have been stabling you mustn't have been stabling they mustn't have been stabling

Interrogative form

Simple form	V-ing form
must I stable? must you stable? must he stable? must we stable? must you stable? must they stable?	must I be stabling? must you be stabling? must he be stabling? must we be stabling? must you be stabling? must they be stabling?
Perfect	V-ing perfect
must I have stabled? must you have stabled? must he have stabled? must we have stabled? must you have stabled? must they have stabled?	must I have been stabling? must you have been stabling? must he have been stabling? must we have been stabling? must you have been stabling? must they have been stabling?

Interro-negative form

Simple form	V-ing form
mustn't I stable? mustn't you stable? mustn't he stable? mustn't we stable? mustn't you stable? mustn't they stable?	mustn't I be stabling? mustn't you be stabling? mustn't he be stabling? mustn't we be stabling? mustn't you be stabling? mustn't they be stabling?
Perfect	V-ing perfect
mustn't I have stabled? mustn't you have stabled? mustn't he have stabled? mustn't we have stabled? mustn't you have stabled? mustn't they have stabled?	mustn't I have been stabling? mustn't you have been stabling? mustn't he have been stabling? mustn't we have been stabling? mustn't you have been stabling? mustn't they have been stabling?