English verb conjugation
COULD LIVEN

Regular verb: liven - livened - livened

Affirmation

Simple form	V-ing form
I could liven you could liven she could liven we could liven you could liven they could liven	I could be livening you could be livening she could be livening we could be livening you could be livening they could be livening
Perfect	V-ing perfect
I could have livened you could have livened she could have livened we could have livened you could have livened they could have livened	I could have been livening you could have been livening she could have been livening we could have been livening you could have been livening they could have been livening

Negation

Simple form	V-ing form
I couldn't liven you couldn't liven she couldn't liven we couldn't liven you couldn't liven they couldn't liven	I couldn't be livening you couldn't be livening she couldn't be livening we couldn't be livening you couldn't be livening they couldn't be livening
Perfect	V-ing perfect
I couldn't have livened you couldn't have livened she couldn't have livened we couldn't have livened you couldn't have livened they couldn't have livened	I couldn't have been livening you couldn't have been livening she couldn't have been livening we couldn't have been livening you couldn't have been livening they couldn't have been livening

Interrogative form

Simple form	V-ing form
could I liven? could you liven? could she liven? could we liven? could you liven? could they liven?	could I be livening? could you be livening? could she be livening? could we be livening? could you be livening? could they be livening?
Perfect	V-ing perfect
could I have livened? could you have livened? could she have livened? could we have livened? could you have livened? could they have livened?	could I have been livening? could you have been livening? could she have been livening? could we have been livening? could you have been livening? could they have been livening?

Interro-negative form

Simple form	V-ing form
couldn't I liven? couldn't you liven? couldn't she liven? couldn't we liven? couldn't you liven? couldn't they liven?	couldn't I be livening? couldn't you be livening? couldn't she be livening? couldn't we be livening? couldn't you be livening? couldn't they be livening?
Perfect	V-ing perfect
couldn't I have livened? couldn't you have livened? couldn't she have livened? couldn't we have livened? couldn't you have livened? couldn't they have livened?	couldn't I have been livening? couldn't you have been livening? couldn't she have been livening? couldn't we have been livening? couldn't you have been livening? couldn't they have been livening?