I can chip you can chip he can chip we can chip you can chip they can chip
V-ing form
I can be chipping you can be chipping he can be chipping we can be chipping you can be chipping they can be chipping
Perfect
I can have chipped you can have chipped he can have chipped we can have chipped you can have chipped they can have chipped
V-ing perfect
I can have been chipping you can have been chipping he can have been chipping we can have been chipping you can have been chipping they can have been chipping
Negation
Simple form
I can't chip you can't chip he can't chip we can't chip you can't chip they can't chip
V-ing form
I can't be chipping you can't be chipping he can't be chipping we can't be chipping you can't be chipping they can't be chipping
Perfect
I can't have chipped you can't have chipped he can't have chipped we can't have chipped you can't have chipped they can't have chipped
V-ing perfect
I can't have been chipping you can't have been chipping he can't have been chipping we can't have been chipping you can't have been chipping they can't have been chipping
Interrogative form
Simple form
can I chip? can you chip? can he chip? can we chip? can you chip? can they chip?
V-ing form
can I be chipping? can you be chipping? can he be chipping? can we be chipping? can you be chipping? can they be chipping?
Perfect
can I have chipped? can you have chipped? can he have chipped? can we have chipped? can you have chipped? can they have chipped?
V-ing perfect
can I have been chipping? can you have been chipping? can he have been chipping? can we have been chipping? can you have been chipping? can they have been chipping?
Interro-negative form
Simple form
can't I chip? can't you chip? can't he chip? can't we chip? can't you chip? can't they chip?
V-ing form
can't I be chipping? can't you be chipping? can't he be chipping? can't we be chipping? can't you be chipping? can't they be chipping?
Perfect
can't I have chipped? can't you have chipped? can't he have chipped? can't we have chipped? can't you have chipped? can't they have chipped?
V-ing perfect
can't I have been chipping? can't you have been chipping? can't he have been chipping? can't we have been chipping? can't you have been chipping? can't they have been chipping?