English verb conjugation
COULD OFFEND

Regular verb: offend - offended - offended

Affirmation

Simple form	V-ing form
I could offend you could offend she could offend we could offend you could offend they could offend	I could be offending you could be offending she could be offending we could be offending you could be offending they could be offending
Perfect	V-ing perfect
I could have offended you could have offended she could have offended we could have offended you could have offended they could have offended	I could have been offending you could have been offending she could have been offending we could have been offending you could have been offending they could have been offending

Negation

Simple form	V-ing form
I couldn't offend you couldn't offend she couldn't offend we couldn't offend you couldn't offend they couldn't offend	I couldn't be offending you couldn't be offending she couldn't be offending we couldn't be offending you couldn't be offending they couldn't be offending
Perfect	V-ing perfect
I couldn't have offended you couldn't have offended she couldn't have offended we couldn't have offended you couldn't have offended they couldn't have offended	I couldn't have been offending you couldn't have been offending she couldn't have been offending we couldn't have been offending you couldn't have been offending they couldn't have been offending

Interrogative form

Simple form	V-ing form
could I offend? could you offend? could she offend? could we offend? could you offend? could they offend?	could I be offending? could you be offending? could she be offending? could we be offending? could you be offending? could they be offending?
Perfect	V-ing perfect
could I have offended? could you have offended? could she have offended? could we have offended? could you have offended? could they have offended?	could I have been offending? could you have been offending? could she have been offending? could we have been offending? could you have been offending? could they have been offending?

Interro-negative form

Simple form	V-ing form
couldn't I offend? couldn't you offend? couldn't she offend? couldn't we offend? couldn't you offend? couldn't they offend?	couldn't I be offending? couldn't you be offending? couldn't she be offending? couldn't we be offending? couldn't you be offending? couldn't they be offending?
Perfect	V-ing perfect
couldn't I have offended? couldn't you have offended? couldn't she have offended? couldn't we have offended? couldn't you have offended? couldn't they have offended?	couldn't I have been offending? couldn't you have been offending? couldn't she have been offending? couldn't we have been offending? couldn't you have been offending? couldn't they have been offending?