English verb conjugation
CAN EARN

Regular verb: earn - earned - earned

Affirmation

Simple form	V-ing form
I can earn you can earn he can earn we can earn you can earn they can earn	I can be earning you can be earning he 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 he 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 he 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 can't earn you can't earn he can't earn we can't earn you can't earn they can't earn	I can't be earning you can't be earning he can't be earning we can't be earning you can't be earning they can't be earning
Perfect	V-ing perfect
I can't have earned you can't have earned he can't have earned we can't have earned you can't have earned they can't have earned	I can't have been earning you can't have been earning he can't have been earning we can't have been earning you can't have been earning they can't have been earning

Interrogative form

Simple form	V-ing form
can I earn? can you earn? can he earn? can we earn? can you earn? can they earn?	can I be earning? can you be earning? can he 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 he 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 he 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't I earn? can't you earn? can't he earn? can't we earn? can't you earn? can't they earn?	can't I be earning? can't you be earning? can't he be earning? can't we be earning? can't you be earning? can't they be earning?
Perfect	V-ing perfect
can't I have earned? can't you have earned? can't he have earned? can't we have earned? can't you have earned? can't they have earned?	can't I have been earning? can't you have been earning? can't he have been earning? can't we have been earning? can't you have been earning? can't they have been earning?