could debug
Regular verb: debug - debugged- debugged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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? 	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 	Perfect 	V-ing perfect 	
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? 	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?