English verb conjugation
COULD TRACK

Regular verb: track - tracked - tracked

Affirmation

Simple form	V-ing form
I could track you could track she could track we could track you could track they could track	I could be tracking you could be tracking she could be tracking we could be tracking you could be tracking they could be tracking
Perfect	V-ing perfect
I could have tracked you could have tracked she could have tracked we could have tracked you could have tracked they could have tracked	I could have been tracking you could have been tracking she could have been tracking we could have been tracking you could have been tracking they could have been tracking

Negation

Simple form	V-ing form
I couldn't track you couldn't track she couldn't track we couldn't track you couldn't track they couldn't track	I couldn't be tracking you couldn't be tracking she couldn't be tracking we couldn't be tracking you couldn't be tracking they couldn't be tracking
Perfect	V-ing perfect
I couldn't have tracked you couldn't have tracked she couldn't have tracked we couldn't have tracked you couldn't have tracked they couldn't have tracked	I couldn't have been tracking you couldn't have been tracking she couldn't have been tracking we couldn't have been tracking you couldn't have been tracking they couldn't have been tracking

Interrogative form

Simple form	V-ing form
could I track? could you track? could she track? could we track? could you track? could they track?	could I be tracking? could you be tracking? could she be tracking? could we be tracking? could you be tracking? could they be tracking?
Perfect	V-ing perfect
could I have tracked? could you have tracked? could she have tracked? could we have tracked? could you have tracked? could they have tracked?	could I have been tracking? could you have been tracking? could she have been tracking? could we have been tracking? could you have been tracking? could they have been tracking?

Interro-negative form

Simple form	V-ing form
couldn't I track? couldn't you track? couldn't she track? couldn't we track? couldn't you track? couldn't they track?	couldn't I be tracking? couldn't you be tracking? couldn't she be tracking? couldn't we be tracking? couldn't you be tracking? couldn't they be tracking?
Perfect	V-ing perfect
couldn't I have tracked? couldn't you have tracked? couldn't she have tracked? couldn't we have tracked? couldn't you have tracked? couldn't they have tracked?	couldn't I have been tracking? couldn't you have been tracking? couldn't she have been tracking? couldn't we have been tracking? couldn't you have been tracking? couldn't they have been tracking?