I could interview you could interview he could interview we could interview you could interview they could interview
V-ing form
I could be interviewing you could be interviewing he could be interviewing we could be interviewing you could be interviewing they could be interviewing
Perfect
I could have interviewed you could have interviewed he could have interviewed we could have interviewed you could have interviewed they could have interviewed
V-ing perfect
I could have been interviewing you could have been interviewing he could have been interviewing we could have been interviewing you could have been interviewing they could have been interviewing
Negation
Simple form
I couldn't interview you couldn't interview he couldn't interview we couldn't interview you couldn't interview they couldn't interview
V-ing form
I couldn't be interviewing you couldn't be interviewing he couldn't be interviewing we couldn't be interviewing you couldn't be interviewing they couldn't be interviewing
Perfect
I couldn't have interviewed you couldn't have interviewed he couldn't have interviewed we couldn't have interviewed you couldn't have interviewed they couldn't have interviewed
V-ing perfect
I couldn't have been interviewing you couldn't have been interviewing he couldn't have been interviewing we couldn't have been interviewing you couldn't have been interviewing they couldn't have been interviewing
Interrogative form
Simple form
could I interview? could you interview? could he interview? could we interview? could you interview? could they interview?
V-ing form
could I be interviewing? could you be interviewing? could he be interviewing? could we be interviewing? could you be interviewing? could they be interviewing?
Perfect
could I have interviewed? could you have interviewed? could he have interviewed? could we have interviewed? could you have interviewed? could they have interviewed?
V-ing perfect
could I have been interviewing? could you have been interviewing? could he have been interviewing? could we have been interviewing? could you have been interviewing? could they have been interviewing?
Interro-negative form
Simple form
couldn't I interview? couldn't you interview? couldn't he interview? couldn't we interview? couldn't you interview? couldn't they interview?
V-ing form
couldn't I be interviewing? couldn't you be interviewing? couldn't he be interviewing? couldn't we be interviewing? couldn't you be interviewing? couldn't they be interviewing?
Perfect
couldn't I have interviewed? couldn't you have interviewed? couldn't he have interviewed? couldn't we have interviewed? couldn't you have interviewed? couldn't they have interviewed?
V-ing perfect
couldn't I have been interviewing? couldn't you have been interviewing? couldn't he have been interviewing? couldn't we have been interviewing? couldn't you have been interviewing? couldn't they have been interviewing?