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 cannot shock you cannot shock he cannot shock we cannot shock you cannot shock they cannot shock
V-ing form
I cannot be shocking you cannot be shocking he cannot be shocking we cannot be shocking you cannot be shocking they cannot be shocking
Perfect
I cannot have shocked you cannot have shocked he cannot have shocked we cannot have shocked you cannot have shocked they cannot have shocked
V-ing perfect
I cannot have been shocking you cannot have been shocking he cannot have been shocking we cannot have been shocking you cannot have been shocking they cannot 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 I not shock? can you not shock? can he not shock? can we not shock? can you not shock? can they not shock?
V-ing form
can I not be shocking? can you not be shocking? can he not be shocking? can we not be shocking? can you not be shocking? can they not be shocking?
Perfect
can I not have shocked? can you not have shocked? can he not have shocked? can we not have shocked? can you not have shocked? can they not have shocked?
V-ing perfect
can I not have been shocking? can you not have been shocking? can he not have been shocking? can we not have been shocking? can you not have been shocking? can they not have been shocking?