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 couldn't debug you couldn't debug she couldn't debug we couldn't debug you couldn't debug they couldn't debug	I couldn't be debugging you couldn't be debugging she couldn't be debugging we couldn't be debugging you couldn't be debugging they couldn't be debugging
Perfect	V-ing perfect
I couldn't have debugged you couldn't have debugged she couldn't have debugged we couldn't have debugged you couldn't have debugged they couldn't have debugged	I couldn't have been debugging you couldn't have been debugging she couldn't have been debugging we couldn't have been debugging you couldn't have been debugging they couldn't 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
couldn't I debug? couldn't you debug? couldn't she debug? couldn't we debug? couldn't you debug? couldn't they debug?	couldn't I be debugging? couldn't you be debugging? couldn't she be debugging? couldn't we be debugging? couldn't you be debugging? couldn't they be debugging?
Perfect	V-ing perfect
couldn't I have debugged? couldn't you have debugged? couldn't she have debugged? couldn't we have debugged? couldn't you have debugged? couldn't they have debugged?	couldn't I have been debugging? couldn't you have been debugging? couldn't she have been debugging? couldn't we have been debugging? couldn't you have been debugging? couldn't they have been debugging?