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 must not roughneck you must not roughneck he must not roughneck we must not roughneck you must not roughneck they must not roughneck	I must not be roughnecking you must not be roughnecking he must not be roughnecking we must not be roughnecking you must not be roughnecking they must not be roughnecking
Perfect	V-ing perfect
I must not have roughnecked you must not have roughnecked he must not have roughnecked we must not have roughnecked you must not have roughnecked they must not have roughnecked	I must not have been roughnecking you must not have been roughnecking he must not have been roughnecking we must not have been roughnecking you must not have been roughnecking they must not 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
must I not roughneck? must you not roughneck? must he not roughneck? must we not roughneck? must you not roughneck? must they not roughneck?	must I not be roughnecking? must you not be roughnecking? must he not be roughnecking? must we not be roughnecking? must you not be roughnecking? must they not be roughnecking?
Perfect	V-ing perfect
must I not have roughnecked? must you not have roughnecked? must he not have roughnecked? must we not have roughnecked? must you not have roughnecked? must they not have roughnecked?	must I not have been roughnecking? must you not have been roughnecking? must he not have been roughnecking? must we not have been roughnecking? must you not have been roughnecking? must they not have been roughnecking?