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 can't calcify you can't calcify she can't calcify we can't calcify you can't calcify they can't calcify	I can't be calcifying you can't be calcifying she can't be calcifying we can't be calcifying you can't be calcifying they can't be calcifying
Perfect	V-ing perfect
I can't have calcified you can't have calcified she can't have calcified we can't have calcified you can't have calcified they can't have calcified	I can't have been calcifying you can't have been calcifying she can't have been calcifying we can't have been calcifying you can't have been calcifying they can't 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't I calcify? can't you calcify? can't she calcify? can't we calcify? can't you calcify? can't they calcify?	can't I be calcifying? can't you be calcifying? can't she be calcifying? can't we be calcifying? can't you be calcifying? can't they be calcifying?
Perfect	V-ing perfect
can't I have calcified? can't you have calcified? can't she have calcified? can't we have calcified? can't you have calcified? can't they have calcified?	can't I have been calcifying? can't you have been calcifying? can't she have been calcifying? can't we have been calcifying? can't you have been calcifying? can't they have been calcifying?