English verb conjugation
MUST ROUGHNECK

Regular verb: roughneck - roughnecked - roughnecked

Affirmation

Simple form	V-ing form
I must roughneck you must roughneck he must roughneck we must roughneck you must roughneck they must roughneck	I must be roughnecking you must be roughnecking he must be roughnecking we must be roughnecking you must be roughnecking they must be roughnecking
Perfect	V-ing perfect
I must have roughnecked you must have roughnecked he must have roughnecked we must have roughnecked you must have roughnecked they must have roughnecked	I must have been roughnecking you must have been roughnecking he must have been roughnecking we must have been roughnecking you must have been roughnecking they must have been roughnecking

Negation

Simple form	V-ing form
I mustn't roughneck you mustn't roughneck he mustn't roughneck we mustn't roughneck you mustn't roughneck they mustn't roughneck	I mustn't be roughnecking you mustn't be roughnecking he mustn't be roughnecking we mustn't be roughnecking you mustn't be roughnecking they mustn't be roughnecking
Perfect	V-ing perfect
I mustn't have roughnecked you mustn't have roughnecked he mustn't have roughnecked we mustn't have roughnecked you mustn't have roughnecked they mustn't have roughnecked	I mustn't have been roughnecking you mustn't have been roughnecking he mustn't have been roughnecking we mustn't have been roughnecking you mustn't have been roughnecking they mustn't have been roughnecking

Interrogative form

Simple form	V-ing form
must I roughneck? must you roughneck? must he roughneck? must we roughneck? must you roughneck? must they roughneck?	must I be roughnecking? must you be roughnecking? must he be roughnecking? must we be roughnecking? must you be roughnecking? must they be roughnecking?
Perfect	V-ing perfect
must I have roughnecked? must you have roughnecked? must he have roughnecked? must we have roughnecked? must you have roughnecked? must they have roughnecked?	must I have been roughnecking? must you have been roughnecking? must he have been roughnecking? must we have been roughnecking? must you have been roughnecking? must they have been roughnecking?

Interro-negative form

Simple form	V-ing form
mustn't I roughneck? mustn't you roughneck? mustn't he roughneck? mustn't we roughneck? mustn't you roughneck? mustn't they roughneck?	mustn't I be roughnecking? mustn't you be roughnecking? mustn't he be roughnecking? mustn't we be roughnecking? mustn't you be roughnecking? mustn't they be roughnecking?
Perfect	V-ing perfect
mustn't I have roughnecked? mustn't you have roughnecked? mustn't he have roughnecked? mustn't we have roughnecked? mustn't you have roughnecked? mustn't they have roughnecked?	mustn't I have been roughnecking? mustn't you have been roughnecking? mustn't he have been roughnecking? mustn't we have been roughnecking? mustn't you have been roughnecking? mustn't they have been roughnecking?