English verb conjugation
COULD UPSWING

Irregular verb: upswing - upswung - upswung

Affirmation

Simple form	V-ing form
I could upswing you could upswing he could upswing we could upswing you could upswing they could upswing	I could be upswinging you could be upswinging he could be upswinging we could be upswinging you could be upswinging they could be upswinging
Perfect	V-ing perfect
I could have upswung you could have upswung he could have upswung we could have upswung you could have upswung they could have upswung	I could have been upswinging you could have been upswinging he could have been upswinging we could have been upswinging you could have been upswinging they could have been upswinging

Negation

Simple form	V-ing form
I could not upswing you could not upswing he could not upswing we could not upswing you could not upswing they could not upswing	I could not be upswinging you could not be upswinging he could not be upswinging we could not be upswinging you could not be upswinging they could not be upswinging
Perfect	V-ing perfect
I could not have upswung you could not have upswung he could not have upswung we could not have upswung you could not have upswung they could not have upswung	I could not have been upswinging you could not have been upswinging he could not have been upswinging we could not have been upswinging you could not have been upswinging they could not have been upswinging

Interrogative form

Simple form	V-ing form
could I upswing? could you upswing? could he upswing? could we upswing? could you upswing? could they upswing?	could I be upswinging? could you be upswinging? could he be upswinging? could we be upswinging? could you be upswinging? could they be upswinging?
Perfect	V-ing perfect
could I have upswung? could you have upswung? could he have upswung? could we have upswung? could you have upswung? could they have upswung?	could I have been upswinging? could you have been upswinging? could he have been upswinging? could we have been upswinging? could you have been upswinging? could they have been upswinging?

Interro-negative form

Simple form	V-ing form
could I not upswing? could you not upswing? could he not upswing? could we not upswing? could you not upswing? could they not upswing?	could I not be upswinging? could you not be upswinging? could he not be upswinging? could we not be upswinging? could you not be upswinging? could they not be upswinging?
Perfect	V-ing perfect
could I not have upswung? could you not have upswung? could he not have upswung? could we not have upswung? could you not have upswung? could they not have upswung?	could I not have been upswinging? could you not have been upswinging? could he not have been upswinging? could we not have been upswinging? could you not have been upswinging? could they not have been upswinging?