English verb conjugation
COULD FRIT

Regular verb: frit - frited - frited

Affirmation

Simple form	V-ing form
I could frit you could frit he could frit we could frit you could frit they could frit	I could be friting you could be friting he could be friting we could be friting you could be friting they could be friting
Perfect	V-ing perfect
I could have frited you could have frited he could have frited we could have frited you could have frited they could have frited	I could have been friting you could have been friting he could have been friting we could have been friting you could have been friting they could have been friting

Negation

Simple form	V-ing form
I couldn't frit you couldn't frit he couldn't frit we couldn't frit you couldn't frit they couldn't frit	I couldn't be friting you couldn't be friting he couldn't be friting we couldn't be friting you couldn't be friting they couldn't be friting
Perfect	V-ing perfect
I couldn't have frited you couldn't have frited he couldn't have frited we couldn't have frited you couldn't have frited they couldn't have frited	I couldn't have been friting you couldn't have been friting he couldn't have been friting we couldn't have been friting you couldn't have been friting they couldn't have been friting

Interrogative form

Simple form	V-ing form
could I frit? could you frit? could he frit? could we frit? could you frit? could they frit?	could I be friting? could you be friting? could he be friting? could we be friting? could you be friting? could they be friting?
Perfect	V-ing perfect
could I have frited? could you have frited? could he have frited? could we have frited? could you have frited? could they have frited?	could I have been friting? could you have been friting? could he have been friting? could we have been friting? could you have been friting? could they have been friting?

Interro-negative form

Simple form	V-ing form
couldn't I frit? couldn't you frit? couldn't he frit? couldn't we frit? couldn't you frit? couldn't they frit?	couldn't I be friting? couldn't you be friting? couldn't he be friting? couldn't we be friting? couldn't you be friting? couldn't they be friting?
Perfect	V-ing perfect
couldn't I have frited? couldn't you have frited? couldn't he have frited? couldn't we have frited? couldn't you have frited? couldn't they have frited?	couldn't I have been friting? couldn't you have been friting? couldn't he have been friting? couldn't we have been friting? couldn't you have been friting? couldn't they have been friting?