English verb conjugation
COULD DEBUG

Regular verb: debug - debugged - debugged

Affirmation

Simple form	V-ing form
I could debug you could debug she could debug we could debug you could debug they could debug	I could be debugging you could be debugging she could be debugging we could be debugging you could be debugging they could be debugging
Perfect	V-ing perfect
I could have debugged you could have debugged she could have debugged we could have debugged you could have debugged they could have debugged	I could have been debugging you could have been debugging she could have been debugging we could have been debugging you could have been debugging they could have been debugging

Negation

Simple form	V-ing form
I could not debug you could not debug she could not debug we could not debug you could not debug they could not debug	I could not be debugging you could not be debugging she could not be debugging we could not be debugging you could not be debugging they could not be debugging
Perfect	V-ing perfect
I could not have debugged you could not have debugged she could not have debugged we could not have debugged you could not have debugged they could not have debugged	I could not have been debugging you could not have been debugging she could not have been debugging we could not have been debugging you could not have been debugging they could not have been debugging

Interrogative form

Simple form	V-ing form
could I debug? could you debug? could she debug? could we debug? could you debug? could they debug?	could I be debugging? could you be debugging? could she be debugging? could we be debugging? could you be debugging? could they be debugging?
Perfect	V-ing perfect
could I have debugged? could you have debugged? could she have debugged? could we have debugged? could you have debugged? could they have debugged?	could I have been debugging? could you have been debugging? could she have been debugging? could we have been debugging? could you have been debugging? could they have been debugging?

Interro-negative form

Simple form	V-ing form
could I not debug? could you not debug? could she not debug? could we not debug? could you not debug? could they not debug?	could I not be debugging? could you not be debugging? could she not be debugging? could we not be debugging? could you not be debugging? could they not be debugging?
Perfect	V-ing perfect
could I not have debugged? could you not have debugged? could she not have debugged? could we not have debugged? could you not have debugged? could they not have debugged?	could I not have been debugging? could you not have been debugging? could she not have been debugging? could we not have been debugging? could you not have been debugging? could they not have been debugging?