English verb conjugation
CAN COARSEN

Regular verb: coarsen - coarsened - coarsened

Affirmation

Simple form	V-ing form
I can coarsen you can coarsen he can coarsen we can coarsen you can coarsen they can coarsen	I can be coarsening you can be coarsening he can be coarsening we can be coarsening you can be coarsening they can be coarsening
Perfect	V-ing perfect
I can have coarsened you can have coarsened he can have coarsened we can have coarsened you can have coarsened they can have coarsened	I can have been coarsening you can have been coarsening he can have been coarsening we can have been coarsening you can have been coarsening they can have been coarsening

Negation

Simple form	V-ing form
I cannot coarsen you cannot coarsen he cannot coarsen we cannot coarsen you cannot coarsen they cannot coarsen	I cannot be coarsening you cannot be coarsening he cannot be coarsening we cannot be coarsening you cannot be coarsening they cannot be coarsening
Perfect	V-ing perfect
I cannot have coarsened you cannot have coarsened he cannot have coarsened we cannot have coarsened you cannot have coarsened they cannot have coarsened	I cannot have been coarsening you cannot have been coarsening he cannot have been coarsening we cannot have been coarsening you cannot have been coarsening they cannot have been coarsening

Interrogative form

Simple form	V-ing form
can I coarsen? can you coarsen? can he coarsen? can we coarsen? can you coarsen? can they coarsen?	can I be coarsening? can you be coarsening? can he be coarsening? can we be coarsening? can you be coarsening? can they be coarsening?
Perfect	V-ing perfect
can I have coarsened? can you have coarsened? can he have coarsened? can we have coarsened? can you have coarsened? can they have coarsened?	can I have been coarsening? can you have been coarsening? can he have been coarsening? can we have been coarsening? can you have been coarsening? can they have been coarsening?

Interro-negative form

Simple form	V-ing form
can I not coarsen? can you not coarsen? can he not coarsen? can we not coarsen? can you not coarsen? can they not coarsen?	can I not be coarsening? can you not be coarsening? can he not be coarsening? can we not be coarsening? can you not be coarsening? can they not be coarsening?
Perfect	V-ing perfect
can I not have coarsened? can you not have coarsened? can he not have coarsened? can we not have coarsened? can you not have coarsened? can they not have coarsened?	can I not have been coarsening? can you not have been coarsening? can he not have been coarsening? can we not have been coarsening? can you not have been coarsening? can they not have been coarsening?