English verb conjugation
COULD ENTAIL

Regular verb: entail - entailed - entailed

Affirmation

Simple form	V-ing form
I could entail you could entail he could entail we could entail you could entail they could entail	I could be entailing you could be entailing he could be entailing we could be entailing you could be entailing they could be entailing
Perfect	V-ing perfect
I could have entailed you could have entailed he could have entailed we could have entailed you could have entailed they could have entailed	I could have been entailing you could have been entailing he could have been entailing we could have been entailing you could have been entailing they could have been entailing

Negation

Simple form	V-ing form
I couldn't entail you couldn't entail he couldn't entail we couldn't entail you couldn't entail they couldn't entail	I couldn't be entailing you couldn't be entailing he couldn't be entailing we couldn't be entailing you couldn't be entailing they couldn't be entailing
Perfect	V-ing perfect
I couldn't have entailed you couldn't have entailed he couldn't have entailed we couldn't have entailed you couldn't have entailed they couldn't have entailed	I couldn't have been entailing you couldn't have been entailing he couldn't have been entailing we couldn't have been entailing you couldn't have been entailing they couldn't have been entailing

Interrogative form

Simple form	V-ing form
could I entail? could you entail? could he entail? could we entail? could you entail? could they entail?	could I be entailing? could you be entailing? could he be entailing? could we be entailing? could you be entailing? could they be entailing?
Perfect	V-ing perfect
could I have entailed? could you have entailed? could he have entailed? could we have entailed? could you have entailed? could they have entailed?	could I have been entailing? could you have been entailing? could he have been entailing? could we have been entailing? could you have been entailing? could they have been entailing?

Interro-negative form

Simple form	V-ing form
couldn't I entail? couldn't you entail? couldn't he entail? couldn't we entail? couldn't you entail? couldn't they entail?	couldn't I be entailing? couldn't you be entailing? couldn't he be entailing? couldn't we be entailing? couldn't you be entailing? couldn't they be entailing?
Perfect	V-ing perfect
couldn't I have entailed? couldn't you have entailed? couldn't he have entailed? couldn't we have entailed? couldn't you have entailed? couldn't they have entailed?	couldn't I have been entailing? couldn't you have been entailing? couldn't he have been entailing? couldn't we have been entailing? couldn't you have been entailing? couldn't they have been entailing?