English verb conjugation
COULD CALCIFY

Regular verb: calcify - calcified - calcified

Affirmation

Simple form	V-ing form
I could calcify you could calcify he could calcify we could calcify you could calcify they could calcify	I could be calcifying you could be calcifying he could be calcifying we could be calcifying you could be calcifying they could be calcifying
Perfect	V-ing perfect
I could have calcified you could have calcified he could have calcified we could have calcified you could have calcified they could have calcified	I could have been calcifying you could have been calcifying he could have been calcifying we could have been calcifying you could have been calcifying they could have been calcifying

Negation

Simple form	V-ing form
I could not calcify you could not calcify he could not calcify we could not calcify you could not calcify they could not calcify	I could not be calcifying you could not be calcifying he could not be calcifying we could not be calcifying you could not be calcifying they could not be calcifying
Perfect	V-ing perfect
I could not have calcified you could not have calcified he could not have calcified we could not have calcified you could not have calcified they could not have calcified	I could not have been calcifying you could not have been calcifying he could not have been calcifying we could not have been calcifying you could not have been calcifying they could not have been calcifying

Interrogative form

Simple form	V-ing form
could I calcify? could you calcify? could he calcify? could we calcify? could you calcify? could they calcify?	could I be calcifying? could you be calcifying? could he be calcifying? could we be calcifying? could you be calcifying? could they be calcifying?
Perfect	V-ing perfect
could I have calcified? could you have calcified? could he have calcified? could we have calcified? could you have calcified? could they have calcified?	could I have been calcifying? could you have been calcifying? could he have been calcifying? could we have been calcifying? could you have been calcifying? could they have been calcifying?

Interro-negative form

Simple form	V-ing form
could I not calcify? could you not calcify? could he not calcify? could we not calcify? could you not calcify? could they not calcify?	could I not be calcifying? could you not be calcifying? could he not be calcifying? could we not be calcifying? could you not be calcifying? could they not be calcifying?
Perfect	V-ing perfect
could I not have calcified? could you not have calcified? could he not have calcified? could we not have calcified? could you not have calcified? could they not have calcified?	could I not have been calcifying? could you not have been calcifying? could he not have been calcifying? could we not have been calcifying? could you not have been calcifying? could they not have been calcifying?