English verb conjugation
COULD LITHIFY

Regular verb: lithify - lithified - lithified

Affirmation

Simple form	V-ing form
I could lithify you could lithify she could lithify we could lithify you could lithify they could lithify	I could be lithifying you could be lithifying she could be lithifying we could be lithifying you could be lithifying they could be lithifying
Perfect	V-ing perfect
I could have lithified you could have lithified she could have lithified we could have lithified you could have lithified they could have lithified	I could have been lithifying you could have been lithifying she could have been lithifying we could have been lithifying you could have been lithifying they could have been lithifying

Negation

Simple form	V-ing form
I could not lithify you could not lithify she could not lithify we could not lithify you could not lithify they could not lithify	I could not be lithifying you could not be lithifying she could not be lithifying we could not be lithifying you could not be lithifying they could not be lithifying
Perfect	V-ing perfect
I could not have lithified you could not have lithified she could not have lithified we could not have lithified you could not have lithified they could not have lithified	I could not have been lithifying you could not have been lithifying she could not have been lithifying we could not have been lithifying you could not have been lithifying they could not have been lithifying

Interrogative form

Simple form	V-ing form
could I lithify? could you lithify? could she lithify? could we lithify? could you lithify? could they lithify?	could I be lithifying? could you be lithifying? could she be lithifying? could we be lithifying? could you be lithifying? could they be lithifying?
Perfect	V-ing perfect
could I have lithified? could you have lithified? could she have lithified? could we have lithified? could you have lithified? could they have lithified?	could I have been lithifying? could you have been lithifying? could she have been lithifying? could we have been lithifying? could you have been lithifying? could they have been lithifying?

Interro-negative form

Simple form	V-ing form
could I not lithify? could you not lithify? could she not lithify? could we not lithify? could you not lithify? could they not lithify?	could I not be lithifying? could you not be lithifying? could she not be lithifying? could we not be lithifying? could you not be lithifying? could they not be lithifying?
Perfect	V-ing perfect
could I not have lithified? could you not have lithified? could she not have lithified? could we not have lithified? could you not have lithified? could they not have lithified?	could I not have been lithifying? could you not have been lithifying? could she not have been lithifying? could we not have been lithifying? could you not have been lithifying? could they not have been lithifying?