English verb conjugation
CAN SOFTEN

Regular verb: soften - softened - softened

Affirmation

Simple form	V-ing form
I can soften you can soften she can soften we can soften you can soften they can soften	I can be softening you can be softening she can be softening we can be softening you can be softening they can be softening
Perfect	V-ing perfect
I can have softened you can have softened she can have softened we can have softened you can have softened they can have softened	I can have been softening you can have been softening she can have been softening we can have been softening you can have been softening they can have been softening

Negation

Simple form	V-ing form
I can't soften you can't soften she can't soften we can't soften you can't soften they can't soften	I can't be softening you can't be softening she can't be softening we can't be softening you can't be softening they can't be softening
Perfect	V-ing perfect
I can't have softened you can't have softened she can't have softened we can't have softened you can't have softened they can't have softened	I can't have been softening you can't have been softening she can't have been softening we can't have been softening you can't have been softening they can't have been softening

Interrogative form

Simple form	V-ing form
can I soften? can you soften? can she soften? can we soften? can you soften? can they soften?	can I be softening? can you be softening? can she be softening? can we be softening? can you be softening? can they be softening?
Perfect	V-ing perfect
can I have softened? can you have softened? can she have softened? can we have softened? can you have softened? can they have softened?	can I have been softening? can you have been softening? can she have been softening? can we have been softening? can you have been softening? can they have been softening?

Interro-negative form

Simple form	V-ing form
can't I soften? can't you soften? can't she soften? can't we soften? can't you soften? can't they soften?	can't I be softening? can't you be softening? can't she be softening? can't we be softening? can't you be softening? can't they be softening?
Perfect	V-ing perfect
can't I have softened? can't you have softened? can't she have softened? can't we have softened? can't you have softened? can't they have softened?	can't I have been softening? can't you have been softening? can't she have been softening? can't we have been softening? can't you have been softening? can't they have been softening?