I can caddy you can caddy she can caddy we can caddy you can caddy they can caddy
V-ing form
I can be caddying you can be caddying she can be caddying we can be caddying you can be caddying they can be caddying
Perfect
I can have caddied you can have caddied she can have caddied we can have caddied you can have caddied they can have caddied
V-ing perfect
I can have been caddying you can have been caddying she can have been caddying we can have been caddying you can have been caddying they can have been caddying
Negation
Simple form
I cannot caddy you cannot caddy she cannot caddy we cannot caddy you cannot caddy they cannot caddy
V-ing form
I cannot be caddying you cannot be caddying she cannot be caddying we cannot be caddying you cannot be caddying they cannot be caddying
Perfect
I cannot have caddied you cannot have caddied she cannot have caddied we cannot have caddied you cannot have caddied they cannot have caddied
V-ing perfect
I cannot have been caddying you cannot have been caddying she cannot have been caddying we cannot have been caddying you cannot have been caddying they cannot have been caddying
Interrogative form
Simple form
can I caddy? can you caddy? can she caddy? can we caddy? can you caddy? can they caddy?
V-ing form
can I be caddying? can you be caddying? can she be caddying? can we be caddying? can you be caddying? can they be caddying?
Perfect
can I have caddied? can you have caddied? can she have caddied? can we have caddied? can you have caddied? can they have caddied?
V-ing perfect
can I have been caddying? can you have been caddying? can she have been caddying? can we have been caddying? can you have been caddying? can they have been caddying?
Interro-negative form
Simple form
can I not caddy? can you not caddy? can she not caddy? can we not caddy? can you not caddy? can they not caddy?
V-ing form
can I not be caddying? can you not be caddying? can she not be caddying? can we not be caddying? can you not be caddying? can they not be caddying?
Perfect
can I not have caddied? can you not have caddied? can she not have caddied? can we not have caddied? can you not have caddied? can they not have caddied?
V-ing perfect
can I not have been caddying? can you not have been caddying? can she not have been caddying? can we not have been caddying? can you not have been caddying? can they not have been caddying?