English verb conjugation
CAN CALCIFY

Regular verb: calcify - calcified - calcified

Affirmation

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

Negation

Simple form	V-ing form
I cannot calcify you cannot calcify she cannot calcify we cannot calcify you cannot calcify they cannot calcify	I cannot be calcifying you cannot be calcifying she cannot be calcifying we cannot be calcifying you cannot be calcifying they cannot be calcifying
Perfect	V-ing perfect
I cannot have calcified you cannot have calcified she cannot have calcified we cannot have calcified you cannot have calcified they cannot have calcified	I cannot have been calcifying you cannot have been calcifying she cannot have been calcifying we cannot have been calcifying you cannot have been calcifying they cannot have been calcifying

Interrogative form

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

Interro-negative form

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