English verb conjugation
COULD WASSAIL

Regular verb: wassail - wassailed - wassailed

Affirmation

Simple form	V-ing form
I could wassail you could wassail he could wassail we could wassail you could wassail they could wassail	I could be wassailing you could be wassailing he could be wassailing we could be wassailing you could be wassailing they could be wassailing
Perfect	V-ing perfect
I could have wassailed you could have wassailed he could have wassailed we could have wassailed you could have wassailed they could have wassailed	I could have been wassailing you could have been wassailing he could have been wassailing we could have been wassailing you could have been wassailing they could have been wassailing

Negation

Simple form	V-ing form
I couldn't wassail you couldn't wassail he couldn't wassail we couldn't wassail you couldn't wassail they couldn't wassail	I couldn't be wassailing you couldn't be wassailing he couldn't be wassailing we couldn't be wassailing you couldn't be wassailing they couldn't be wassailing
Perfect	V-ing perfect
I couldn't have wassailed you couldn't have wassailed he couldn't have wassailed we couldn't have wassailed you couldn't have wassailed they couldn't have wassailed	I couldn't have been wassailing you couldn't have been wassailing he couldn't have been wassailing we couldn't have been wassailing you couldn't have been wassailing they couldn't have been wassailing

Interrogative form

Simple form	V-ing form
could I wassail? could you wassail? could he wassail? could we wassail? could you wassail? could they wassail?	could I be wassailing? could you be wassailing? could he be wassailing? could we be wassailing? could you be wassailing? could they be wassailing?
Perfect	V-ing perfect
could I have wassailed? could you have wassailed? could he have wassailed? could we have wassailed? could you have wassailed? could they have wassailed?	could I have been wassailing? could you have been wassailing? could he have been wassailing? could we have been wassailing? could you have been wassailing? could they have been wassailing?

Interro-negative form

Simple form	V-ing form
couldn't I wassail? couldn't you wassail? couldn't he wassail? couldn't we wassail? couldn't you wassail? couldn't they wassail?	couldn't I be wassailing? couldn't you be wassailing? couldn't he be wassailing? couldn't we be wassailing? couldn't you be wassailing? couldn't they be wassailing?
Perfect	V-ing perfect
couldn't I have wassailed? couldn't you have wassailed? couldn't he have wassailed? couldn't we have wassailed? couldn't you have wassailed? couldn't they have wassailed?	couldn't I have been wassailing? couldn't you have been wassailing? couldn't he have been wassailing? couldn't we have been wassailing? couldn't you have been wassailing? couldn't they have been wassailing?