English verb conjugation
COULD FROTH

Regular verb: froth - frothed - frothed

Affirmation

Simple form	V-ing form
I could froth you could froth he could froth we could froth you could froth they could froth	I could be frothing you could be frothing he could be frothing we could be frothing you could be frothing they could be frothing
Perfect	V-ing perfect
I could have frothed you could have frothed he could have frothed we could have frothed you could have frothed they could have frothed	I could have been frothing you could have been frothing he could have been frothing we could have been frothing you could have been frothing they could have been frothing

Negation

Simple form	V-ing form
I could not froth you could not froth he could not froth we could not froth you could not froth they could not froth	I could not be frothing you could not be frothing he could not be frothing we could not be frothing you could not be frothing they could not be frothing
Perfect	V-ing perfect
I could not have frothed you could not have frothed he could not have frothed we could not have frothed you could not have frothed they could not have frothed	I could not have been frothing you could not have been frothing he could not have been frothing we could not have been frothing you could not have been frothing they could not have been frothing

Interrogative form

Simple form	V-ing form
could I froth? could you froth? could he froth? could we froth? could you froth? could they froth?	could I be frothing? could you be frothing? could he be frothing? could we be frothing? could you be frothing? could they be frothing?
Perfect	V-ing perfect
could I have frothed? could you have frothed? could he have frothed? could we have frothed? could you have frothed? could they have frothed?	could I have been frothing? could you have been frothing? could he have been frothing? could we have been frothing? could you have been frothing? could they have been frothing?

Interro-negative form

Simple form	V-ing form
could I not froth? could you not froth? could he not froth? could we not froth? could you not froth? could they not froth?	could I not be frothing? could you not be frothing? could he not be frothing? could we not be frothing? could you not be frothing? could they not be frothing?
Perfect	V-ing perfect
could I not have frothed? could you not have frothed? could he not have frothed? could we not have frothed? could you not have frothed? could they not have frothed?	could I not have been frothing? could you not have been frothing? could he not have been frothing? could we not have been frothing? could you not have been frothing? could they not have been frothing?