English verb conjugation
COULD WING

Regular verb: wing - winged - winged

Affirmation

Simple form	V-ing form
I could wing you could wing he could wing we could wing you could wing they could wing	I could be winging you could be winging he could be winging we could be winging you could be winging they could be winging
Perfect	V-ing perfect
I could have winged you could have winged he could have winged we could have winged you could have winged they could have winged	I could have been winging you could have been winging he could have been winging we could have been winging you could have been winging they could have been winging

Negation

Simple form	V-ing form
I couldn't wing you couldn't wing he couldn't wing we couldn't wing you couldn't wing they couldn't wing	I couldn't be winging you couldn't be winging he couldn't be winging we couldn't be winging you couldn't be winging they couldn't be winging
Perfect	V-ing perfect
I couldn't have winged you couldn't have winged he couldn't have winged we couldn't have winged you couldn't have winged they couldn't have winged	I couldn't have been winging you couldn't have been winging he couldn't have been winging we couldn't have been winging you couldn't have been winging they couldn't have been winging

Interrogative form

Simple form	V-ing form
could I wing? could you wing? could he wing? could we wing? could you wing? could they wing?	could I be winging? could you be winging? could he be winging? could we be winging? could you be winging? could they be winging?
Perfect	V-ing perfect
could I have winged? could you have winged? could he have winged? could we have winged? could you have winged? could they have winged?	could I have been winging? could you have been winging? could he have been winging? could we have been winging? could you have been winging? could they have been winging?

Interro-negative form

Simple form	V-ing form
couldn't I wing? couldn't you wing? couldn't he wing? couldn't we wing? couldn't you wing? couldn't they wing?	couldn't I be winging? couldn't you be winging? couldn't he be winging? couldn't we be winging? couldn't you be winging? couldn't they be winging?
Perfect	V-ing perfect
couldn't I have winged? couldn't you have winged? couldn't he have winged? couldn't we have winged? couldn't you have winged? couldn't they have winged?	couldn't I have been winging? couldn't you have been winging? couldn't he have been winging? couldn't we have been winging? couldn't you have been winging? couldn't they have been winging?