English verb conjugation
CAN PETRIFY

Regular verb: petrify - petrified - petrified

Affirmation

Simple form	V-ing form
I can petrify you can petrify he can petrify we can petrify you can petrify they can petrify	I can be petrifying you can be petrifying he can be petrifying we can be petrifying you can be petrifying they can be petrifying
Perfect	V-ing perfect
I can have petrified you can have petrified he can have petrified we can have petrified you can have petrified they can have petrified	I can have been petrifying you can have been petrifying he can have been petrifying we can have been petrifying you can have been petrifying they can have been petrifying

Negation

Simple form	V-ing form
I cannot petrify you cannot petrify he cannot petrify we cannot petrify you cannot petrify they cannot petrify	I cannot be petrifying you cannot be petrifying he cannot be petrifying we cannot be petrifying you cannot be petrifying they cannot be petrifying
Perfect	V-ing perfect
I cannot have petrified you cannot have petrified he cannot have petrified we cannot have petrified you cannot have petrified they cannot have petrified	I cannot have been petrifying you cannot have been petrifying he cannot have been petrifying we cannot have been petrifying you cannot have been petrifying they cannot have been petrifying

Interrogative form

Simple form	V-ing form
can I petrify? can you petrify? can he petrify? can we petrify? can you petrify? can they petrify?	can I be petrifying? can you be petrifying? can he be petrifying? can we be petrifying? can you be petrifying? can they be petrifying?
Perfect	V-ing perfect
can I have petrified? can you have petrified? can he have petrified? can we have petrified? can you have petrified? can they have petrified?	can I have been petrifying? can you have been petrifying? can he have been petrifying? can we have been petrifying? can you have been petrifying? can they have been petrifying?

Interro-negative form

Simple form	V-ing form
can I not petrify? can you not petrify? can he not petrify? can we not petrify? can you not petrify? can they not petrify?	can I not be petrifying? can you not be petrifying? can he not be petrifying? can we not be petrifying? can you not be petrifying? can they not be petrifying?
Perfect	V-ing perfect
can I not have petrified? can you not have petrified? can he not have petrified? can we not have petrified? can you not have petrified? can they not have petrified?	can I not have been petrifying? can you not have been petrifying? can he not have been petrifying? can we not have been petrifying? can you not have been petrifying? can they not have been petrifying?