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 could not levigate you could not levigate he could not levigate we could not levigate you could not levigate they could not levigate	I could not be levigating you could not be levigating he could not be levigating we could not be levigating you could not be levigating they could not be levigating
Perfect	V-ing perfect
I could not have levigated you could not have levigated he could not have levigated we could not have levigated you could not have levigated they could not have levigated	I could not have been levigating you could not have been levigating he could not have been levigating we could not have been levigating you could not have been levigating they could not 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
could I not levigate? could you not levigate? could he not levigate? could we not levigate? could you not levigate? could they not levigate?	could I not be levigating? could you not be levigating? could he not be levigating? could we not be levigating? could you not be levigating? could they not be levigating?
Perfect	V-ing perfect
could I not have levigated? could you not have levigated? could he not have levigated? could we not have levigated? could you not have levigated? could they not have levigated?	could I not have been levigating? could you not have been levigating? could he not have been levigating? could we not have been levigating? could you not have been levigating? could they not have been levigating?