English verb conjugation
CAN EARN

Regular verb: earn - earned - earned

Affirmation

Simple form	V-ing form
I can earn you can earn she can earn we can earn you can earn they can earn	I can be earning you can be earning she can be earning we can be earning you can be earning they can be earning
Perfect	V-ing perfect
I can have earned you can have earned she can have earned we can have earned you can have earned they can have earned	I can have been earning you can have been earning she can have been earning we can have been earning you can have been earning they can have been earning

Negation

Simple form	V-ing form
I cannot earn you cannot earn she cannot earn we cannot earn you cannot earn they cannot earn	I cannot be earning you cannot be earning she cannot be earning we cannot be earning you cannot be earning they cannot be earning
Perfect	V-ing perfect
I cannot have earned you cannot have earned she cannot have earned we cannot have earned you cannot have earned they cannot have earned	I cannot have been earning you cannot have been earning she cannot have been earning we cannot have been earning you cannot have been earning they cannot have been earning

Interrogative form

Simple form	V-ing form
can I earn? can you earn? can she earn? can we earn? can you earn? can they earn?	can I be earning? can you be earning? can she be earning? can we be earning? can you be earning? can they be earning?
Perfect	V-ing perfect
can I have earned? can you have earned? can she have earned? can we have earned? can you have earned? can they have earned?	can I have been earning? can you have been earning? can she have been earning? can we have been earning? can you have been earning? can they have been earning?

Interro-negative form

Simple form	V-ing form
can I not earn? can you not earn? can she not earn? can we not earn? can you not earn? can they not earn?	can I not be earning? can you not be earning? can she not be earning? can we not be earning? can you not be earning? can they not be earning?
Perfect	V-ing perfect
can I not have earned? can you not have earned? can she not have earned? can we not have earned? can you not have earned? can they not have earned?	can I not have been earning? can you not have been earning? can she not have been earning? can we not have been earning? can you not have been earning? can they not have been earning?