English verb conjugation
CAN CODIFY

Regular verb: codify - codified - codified

Affirmation

Simple form	V-ing form
I can codify you can codify she can codify we can codify you can codify they can codify	I can be codifying you can be codifying she can be codifying we can be codifying you can be codifying they can be codifying
Perfect	V-ing perfect
I can have codified you can have codified she can have codified we can have codified you can have codified they can have codified	I can have been codifying you can have been codifying she can have been codifying we can have been codifying you can have been codifying they can have been codifying

Negation

Simple form	V-ing form
I can't codify you can't codify she can't codify we can't codify you can't codify they can't codify	I can't be codifying you can't be codifying she can't be codifying we can't be codifying you can't be codifying they can't be codifying
Perfect	V-ing perfect
I can't have codified you can't have codified she can't have codified we can't have codified you can't have codified they can't have codified	I can't have been codifying you can't have been codifying she can't have been codifying we can't have been codifying you can't have been codifying they can't have been codifying

Interrogative form

Simple form	V-ing form
can I codify? can you codify? can she codify? can we codify? can you codify? can they codify?	can I be codifying? can you be codifying? can she be codifying? can we be codifying? can you be codifying? can they be codifying?
Perfect	V-ing perfect
can I have codified? can you have codified? can she have codified? can we have codified? can you have codified? can they have codified?	can I have been codifying? can you have been codifying? can she have been codifying? can we have been codifying? can you have been codifying? can they have been codifying?

Interro-negative form

Simple form	V-ing form
can't I codify? can't you codify? can't she codify? can't we codify? can't you codify? can't they codify?	can't I be codifying? can't you be codifying? can't she be codifying? can't we be codifying? can't you be codifying? can't they be codifying?
Perfect	V-ing perfect
can't I have codified? can't you have codified? can't she have codified? can't we have codified? can't you have codified? can't they have codified?	can't I have been codifying? can't you have been codifying? can't she have been codifying? can't we have been codifying? can't you have been codifying? can't they have been codifying?