English verb conjugation
COULD LADDER

Regular verb: ladder - laddered - laddered

Affirmation

Simple form	V-ing form
I could ladder you could ladder he could ladder we could ladder you could ladder they could ladder	I could be laddering you could be laddering he could be laddering we could be laddering you could be laddering they could be laddering
Perfect	V-ing perfect
I could have laddered you could have laddered he could have laddered we could have laddered you could have laddered they could have laddered	I could have been laddering you could have been laddering he could have been laddering we could have been laddering you could have been laddering they could have been laddering

Negation

Simple form	V-ing form
I couldn't ladder you couldn't ladder he couldn't ladder we couldn't ladder you couldn't ladder they couldn't ladder	I couldn't be laddering you couldn't be laddering he couldn't be laddering we couldn't be laddering you couldn't be laddering they couldn't be laddering
Perfect	V-ing perfect
I couldn't have laddered you couldn't have laddered he couldn't have laddered we couldn't have laddered you couldn't have laddered they couldn't have laddered	I couldn't have been laddering you couldn't have been laddering he couldn't have been laddering we couldn't have been laddering you couldn't have been laddering they couldn't have been laddering

Interrogative form

Simple form	V-ing form
could I ladder? could you ladder? could he ladder? could we ladder? could you ladder? could they ladder?	could I be laddering? could you be laddering? could he be laddering? could we be laddering? could you be laddering? could they be laddering?
Perfect	V-ing perfect
could I have laddered? could you have laddered? could he have laddered? could we have laddered? could you have laddered? could they have laddered?	could I have been laddering? could you have been laddering? could he have been laddering? could we have been laddering? could you have been laddering? could they have been laddering?

Interro-negative form

Simple form	V-ing form
couldn't I ladder? couldn't you ladder? couldn't he ladder? couldn't we ladder? couldn't you ladder? couldn't they ladder?	couldn't I be laddering? couldn't you be laddering? couldn't he be laddering? couldn't we be laddering? couldn't you be laddering? couldn't they be laddering?
Perfect	V-ing perfect
couldn't I have laddered? couldn't you have laddered? couldn't he have laddered? couldn't we have laddered? couldn't you have laddered? couldn't they have laddered?	couldn't I have been laddering? couldn't you have been laddering? couldn't he have been laddering? couldn't we have been laddering? couldn't you have been laddering? couldn't they have been laddering?