English verb conjugation
COULD SUBTITLE

Regular verb: subtitle - subtitled - subtitled

Affirmation

Simple form	V-ing form
I could subtitle you could subtitle she could subtitle we could subtitle you could subtitle they could subtitle	I could be subtitling you could be subtitling she could be subtitling we could be subtitling you could be subtitling they could be subtitling
Perfect	V-ing perfect
I could have subtitled you could have subtitled she could have subtitled we could have subtitled you could have subtitled they could have subtitled	I could have been subtitling you could have been subtitling she could have been subtitling we could have been subtitling you could have been subtitling they could have been subtitling

Negation

Simple form	V-ing form
I could not subtitle you could not subtitle she could not subtitle we could not subtitle you could not subtitle they could not subtitle	I could not be subtitling you could not be subtitling she could not be subtitling we could not be subtitling you could not be subtitling they could not be subtitling
Perfect	V-ing perfect
I could not have subtitled you could not have subtitled she could not have subtitled we could not have subtitled you could not have subtitled they could not have subtitled	I could not have been subtitling you could not have been subtitling she could not have been subtitling we could not have been subtitling you could not have been subtitling they could not have been subtitling

Interrogative form

Simple form	V-ing form
could I subtitle? could you subtitle? could she subtitle? could we subtitle? could you subtitle? could they subtitle?	could I be subtitling? could you be subtitling? could she be subtitling? could we be subtitling? could you be subtitling? could they be subtitling?
Perfect	V-ing perfect
could I have subtitled? could you have subtitled? could she have subtitled? could we have subtitled? could you have subtitled? could they have subtitled?	could I have been subtitling? could you have been subtitling? could she have been subtitling? could we have been subtitling? could you have been subtitling? could they have been subtitling?

Interro-negative form

Simple form	V-ing form
could I not subtitle? could you not subtitle? could she not subtitle? could we not subtitle? could you not subtitle? could they not subtitle?	could I not be subtitling? could you not be subtitling? could she not be subtitling? could we not be subtitling? could you not be subtitling? could they not be subtitling?
Perfect	V-ing perfect
could I not have subtitled? could you not have subtitled? could she not have subtitled? could we not have subtitled? could you not have subtitled? could they not have subtitled?	could I not have been subtitling? could you not have been subtitling? could she not have been subtitling? could we not have been subtitling? could you not have been subtitling? could they not have been subtitling?