I can christen you can christen he can christen we can christen you can christen they can christen
V-ing form
I can be christening you can be christening he can be christening we can be christening you can be christening they can be christening
Perfect
I can have christened you can have christened he can have christened we can have christened you can have christened they can have christened
V-ing perfect
I can have been christening you can have been christening he can have been christening we can have been christening you can have been christening they can have been christening
Negation
Simple form
I cannot christen you cannot christen he cannot christen we cannot christen you cannot christen they cannot christen
V-ing form
I cannot be christening you cannot be christening he cannot be christening we cannot be christening you cannot be christening they cannot be christening
Perfect
I cannot have christened you cannot have christened he cannot have christened we cannot have christened you cannot have christened they cannot have christened
V-ing perfect
I cannot have been christening you cannot have been christening he cannot have been christening we cannot have been christening you cannot have been christening they cannot have been christening
Interrogative form
Simple form
can I christen? can you christen? can he christen? can we christen? can you christen? can they christen?
V-ing form
can I be christening? can you be christening? can he be christening? can we be christening? can you be christening? can they be christening?
Perfect
can I have christened? can you have christened? can he have christened? can we have christened? can you have christened? can they have christened?
V-ing perfect
can I have been christening? can you have been christening? can he have been christening? can we have been christening? can you have been christening? can they have been christening?
Interro-negative form
Simple form
can I not christen? can you not christen? can he not christen? can we not christen? can you not christen? can they not christen?
V-ing form
can I not be christening? can you not be christening? can he not be christening? can we not be christening? can you not be christening? can they not be christening?
Perfect
can I not have christened? can you not have christened? can he not have christened? can we not have christened? can you not have christened? can they not have christened?
V-ing perfect
can I not have been christening? can you not have been christening? can he not have been christening? can we not have been christening? can you not have been christening? can they not have been christening?