English verb conjugation
CAN LADDER

Regular verb: ladder - laddered - laddered

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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