English verb conjugation
COULD LEVIGATE

Regular verb: levigate - levigated - levigated

Affirmation

Simple form	V-ing form
I could levigate you could levigate he could levigate we could levigate you could levigate they could levigate	I could be levigating you could be levigating he could be levigating we could be levigating you could be levigating they could be levigating
Perfect	V-ing perfect
I could have levigated you could have levigated he could have levigated we could have levigated you could have levigated they could have levigated	I could have been levigating you could have been levigating he could have been levigating we could have been levigating you could have been levigating they could have been levigating

Negation

Simple form	V-ing form
I couldn't levigate you couldn't levigate he couldn't levigate we couldn't levigate you couldn't levigate they couldn't levigate	I couldn't be levigating you couldn't be levigating he couldn't be levigating we couldn't be levigating you couldn't be levigating they couldn't be levigating
Perfect	V-ing perfect
I couldn't have levigated you couldn't have levigated he couldn't have levigated we couldn't have levigated you couldn't have levigated they couldn't have levigated	I couldn't have been levigating you couldn't have been levigating he couldn't have been levigating we couldn't have been levigating you couldn't have been levigating they couldn't have been levigating

Interrogative form

Simple form	V-ing form
could I levigate? could you levigate? could he levigate? could we levigate? could you levigate? could they levigate?	could I be levigating? could you be levigating? could he be levigating? could we be levigating? could you be levigating? could they be levigating?
Perfect	V-ing perfect
could I have levigated? could you have levigated? could he have levigated? could we have levigated? could you have levigated? could they have levigated?	could I have been levigating? could you have been levigating? could he have been levigating? could we have been levigating? could you have been levigating? could they have been levigating?

Interro-negative form

Simple form	V-ing form
couldn't I levigate? couldn't you levigate? couldn't he levigate? couldn't we levigate? couldn't you levigate? couldn't they levigate?	couldn't I be levigating? couldn't you be levigating? couldn't he be levigating? couldn't we be levigating? couldn't you be levigating? couldn't they be levigating?
Perfect	V-ing perfect
couldn't I have levigated? couldn't you have levigated? couldn't he have levigated? couldn't we have levigated? couldn't you have levigated? couldn't they have levigated?	couldn't I have been levigating? couldn't you have been levigating? couldn't he have been levigating? couldn't we have been levigating? couldn't you have been levigating? couldn't they have been levigating?