I can job you can job he can job we can job you can job they can job
V-ing form
I can be jobbing you can be jobbing he can be jobbing we can be jobbing you can be jobbing they can be jobbing
Perfect
I can have jobbed you can have jobbed he can have jobbed we can have jobbed you can have jobbed they can have jobbed
V-ing perfect
I can have been jobbing you can have been jobbing he can have been jobbing we can have been jobbing you can have been jobbing they can have been jobbing
Negation
Simple form
I cannot job you cannot job he cannot job we cannot job you cannot job they cannot job
V-ing form
I cannot be jobbing you cannot be jobbing he cannot be jobbing we cannot be jobbing you cannot be jobbing they cannot be jobbing
Perfect
I cannot have jobbed you cannot have jobbed he cannot have jobbed we cannot have jobbed you cannot have jobbed they cannot have jobbed
V-ing perfect
I cannot have been jobbing you cannot have been jobbing he cannot have been jobbing we cannot have been jobbing you cannot have been jobbing they cannot have been jobbing
Interrogative form
Simple form
can I job? can you job? can he job? can we job? can you job? can they job?
V-ing form
can I be jobbing? can you be jobbing? can he be jobbing? can we be jobbing? can you be jobbing? can they be jobbing?
Perfect
can I have jobbed? can you have jobbed? can he have jobbed? can we have jobbed? can you have jobbed? can they have jobbed?
V-ing perfect
can I have been jobbing? can you have been jobbing? can he have been jobbing? can we have been jobbing? can you have been jobbing? can they have been jobbing?
Interro-negative form
Simple form
can I not job? can you not job? can he not job? can we not job? can you not job? can they not job?
V-ing form
can I not be jobbing? can you not be jobbing? can he not be jobbing? can we not be jobbing? can you not be jobbing? can they not be jobbing?
Perfect
can I not have jobbed? can you not have jobbed? can he not have jobbed? can we not have jobbed? can you not have jobbed? can they not have jobbed?
V-ing perfect
can I not have been jobbing? can you not have been jobbing? can he not have been jobbing? can we not have been jobbing? can you not have been jobbing? can they not have been jobbing?