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 couldn't upswing you couldn't upswing he couldn't upswing we couldn't upswing you couldn't upswing they couldn't upswing	I couldn't be upswinging you couldn't be upswinging he couldn't be upswinging we couldn't be upswinging you couldn't be upswinging they couldn't be upswinging
Perfect	V-ing perfect
I couldn't have upswung you couldn't have upswung he couldn't have upswung we couldn't have upswung you couldn't have upswung they couldn't have upswung	I couldn't have been upswinging you couldn't have been upswinging he couldn't have been upswinging we couldn't have been upswinging you couldn't have been upswinging they couldn't 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
couldn't I upswing? couldn't you upswing? couldn't he upswing? couldn't we upswing? couldn't you upswing? couldn't they upswing?	couldn't I be upswinging? couldn't you be upswinging? couldn't he be upswinging? couldn't we be upswinging? couldn't you be upswinging? couldn't they be upswinging?
Perfect	V-ing perfect
couldn't I have upswung? couldn't you have upswung? couldn't he have upswung? couldn't we have upswung? couldn't you have upswung? couldn't they have upswung?	couldn't I have been upswinging? couldn't you have been upswinging? couldn't he have been upswinging? couldn't we have been upswinging? couldn't you have been upswinging? couldn't they have been upswinging?