English verb conjugation
COULD ADAPT

Regular verb: adapt - adapted - adapted

Affirmation

Simple form	V-ing form
I could adapt you could adapt he could adapt we could adapt you could adapt they could adapt	I could be adapting you could be adapting he could be adapting we could be adapting you could be adapting they could be adapting
Perfect	V-ing perfect
I could have adapted you could have adapted he could have adapted we could have adapted you could have adapted they could have adapted	I could have been adapting you could have been adapting he could have been adapting we could have been adapting you could have been adapting they could have been adapting

Negation

Simple form	V-ing form
I couldn't adapt you couldn't adapt he couldn't adapt we couldn't adapt you couldn't adapt they couldn't adapt	I couldn't be adapting you couldn't be adapting he couldn't be adapting we couldn't be adapting you couldn't be adapting they couldn't be adapting
Perfect	V-ing perfect
I couldn't have adapted you couldn't have adapted he couldn't have adapted we couldn't have adapted you couldn't have adapted they couldn't have adapted	I couldn't have been adapting you couldn't have been adapting he couldn't have been adapting we couldn't have been adapting you couldn't have been adapting they couldn't have been adapting

Interrogative form

Simple form	V-ing form
could I adapt? could you adapt? could he adapt? could we adapt? could you adapt? could they adapt?	could I be adapting? could you be adapting? could he be adapting? could we be adapting? could you be adapting? could they be adapting?
Perfect	V-ing perfect
could I have adapted? could you have adapted? could he have adapted? could we have adapted? could you have adapted? could they have adapted?	could I have been adapting? could you have been adapting? could he have been adapting? could we have been adapting? could you have been adapting? could they have been adapting?

Interro-negative form

Simple form	V-ing form
couldn't I adapt? couldn't you adapt? couldn't he adapt? couldn't we adapt? couldn't you adapt? couldn't they adapt?	couldn't I be adapting? couldn't you be adapting? couldn't he be adapting? couldn't we be adapting? couldn't you be adapting? couldn't they be adapting?
Perfect	V-ing perfect
couldn't I have adapted? couldn't you have adapted? couldn't he have adapted? couldn't we have adapted? couldn't you have adapted? couldn't they have adapted?	couldn't I have been adapting? couldn't you have been adapting? couldn't he have been adapting? couldn't we have been adapting? couldn't you have been adapting? couldn't they have been adapting?