English verb conjugation
CAN ROUGHNECK

Regular verb: roughneck - roughnecked - roughnecked

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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