English verb conjugation
COULD SOFTEN

Regular verb: soften - softened - softened

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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