English verb conjugation
MUST TONGUE

Regular verb: tongue - tongued - tongued

Affirmation

Simple form	V-ing form
I must tongue you must tongue he must tongue we must tongue you must tongue they must tongue	I must be tonguing you must be tonguing he must be tonguing we must be tonguing you must be tonguing they must be tonguing
Perfect	V-ing perfect
I must have tongued you must have tongued he must have tongued we must have tongued you must have tongued they must have tongued	I must have been tonguing you must have been tonguing he must have been tonguing we must have been tonguing you must have been tonguing they must have been tonguing

Negation

Simple form	V-ing form
I mustn't tongue you mustn't tongue he mustn't tongue we mustn't tongue you mustn't tongue they mustn't tongue	I mustn't be tonguing you mustn't be tonguing he mustn't be tonguing we mustn't be tonguing you mustn't be tonguing they mustn't be tonguing
Perfect	V-ing perfect
I mustn't have tongued you mustn't have tongued he mustn't have tongued we mustn't have tongued you mustn't have tongued they mustn't have tongued	I mustn't have been tonguing you mustn't have been tonguing he mustn't have been tonguing we mustn't have been tonguing you mustn't have been tonguing they mustn't have been tonguing

Interrogative form

Simple form	V-ing form
must I tongue? must you tongue? must he tongue? must we tongue? must you tongue? must they tongue?	must I be tonguing? must you be tonguing? must he be tonguing? must we be tonguing? must you be tonguing? must they be tonguing?
Perfect	V-ing perfect
must I have tongued? must you have tongued? must he have tongued? must we have tongued? must you have tongued? must they have tongued?	must I have been tonguing? must you have been tonguing? must he have been tonguing? must we have been tonguing? must you have been tonguing? must they have been tonguing?

Interro-negative form

Simple form	V-ing form
mustn't I tongue? mustn't you tongue? mustn't he tongue? mustn't we tongue? mustn't you tongue? mustn't they tongue?	mustn't I be tonguing? mustn't you be tonguing? mustn't he be tonguing? mustn't we be tonguing? mustn't you be tonguing? mustn't they be tonguing?
Perfect	V-ing perfect
mustn't I have tongued? mustn't you have tongued? mustn't he have tongued? mustn't we have tongued? mustn't you have tongued? mustn't they have tongued?	mustn't I have been tonguing? mustn't you have been tonguing? mustn't he have been tonguing? mustn't we have been tonguing? mustn't you have been tonguing? mustn't they have been tonguing?