English verb conjugation
CAN WORK

Regular verb: work - worked - worked

Affirmation

Simple form	V-ing form
I can work you can work he can work we can work you can work they can work	I can be working you can be working he can be working we can be working you can be working they can be working
Perfect	V-ing perfect
I can have worked you can have worked he can have worked we can have worked you can have worked they can have worked	I can have been working you can have been working he can have been working we can have been working you can have been working they can have been working

Negation

Simple form	V-ing form
I can't work you can't work he can't work we can't work you can't work they can't work	I can't be working you can't be working he can't be working we can't be working you can't be working they can't be working
Perfect	V-ing perfect
I can't have worked you can't have worked he can't have worked we can't have worked you can't have worked they can't have worked	I can't have been working you can't have been working he can't have been working we can't have been working you can't have been working they can't have been working

Interrogative form

Simple form	V-ing form
can I work? can you work? can he work? can we work? can you work? can they work?	can I be working? can you be working? can he be working? can we be working? can you be working? can they be working?
Perfect	V-ing perfect
can I have worked? can you have worked? can he have worked? can we have worked? can you have worked? can they have worked?	can I have been working? can you have been working? can he have been working? can we have been working? can you have been working? can they have been working?

Interro-negative form

Simple form	V-ing form
can't I work? can't you work? can't he work? can't we work? can't you work? can't they work?	can't I be working? can't you be working? can't he be working? can't we be working? can't you be working? can't they be working?
Perfect	V-ing perfect
can't I have worked? can't you have worked? can't he have worked? can't we have worked? can't you have worked? can't they have worked?	can't I have been working? can't you have been working? can't he have been working? can't we have been working? can't you have been working? can't they have been working?