I can shock you can shock he can shock we can shock you can shock they can shock
V-ing form
I can be shocking you can be shocking he can be shocking we can be shocking you can be shocking they can be shocking
Perfect
I can have shocked you can have shocked he can have shocked we can have shocked you can have shocked they can have shocked
V-ing perfect
I can have been shocking you can have been shocking he can have been shocking we can have been shocking you can have been shocking they can have been shocking
Negation
Simple form
I can't shock you can't shock he can't shock we can't shock you can't shock they can't shock
V-ing form
I can't be shocking you can't be shocking he can't be shocking we can't be shocking you can't be shocking they can't be shocking
Perfect
I can't have shocked you can't have shocked he can't have shocked we can't have shocked you can't have shocked they can't have shocked
V-ing perfect
I can't have been shocking you can't have been shocking he can't have been shocking we can't have been shocking you can't have been shocking they can't have been shocking
Interrogative form
Simple form
can I shock? can you shock? can he shock? can we shock? can you shock? can they shock?
V-ing form
can I be shocking? can you be shocking? can he be shocking? can we be shocking? can you be shocking? can they be shocking?
Perfect
can I have shocked? can you have shocked? can he have shocked? can we have shocked? can you have shocked? can they have shocked?
V-ing perfect
can I have been shocking? can you have been shocking? can he have been shocking? can we have been shocking? can you have been shocking? can they have been shocking?
Interro-negative form
Simple form
can't I shock? can't you shock? can't he shock? can't we shock? can't you shock? can't they shock?
V-ing form
can't I be shocking? can't you be shocking? can't he be shocking? can't we be shocking? can't you be shocking? can't they be shocking?
Perfect
can't I have shocked? can't you have shocked? can't he have shocked? can't we have shocked? can't you have shocked? can't they have shocked?
V-ing perfect
can't I have been shocking? can't you have been shocking? can't he have been shocking? can't we have been shocking? can't you have been shocking? can't they have been shocking?