I can snake you can snake he can snake we can snake you can snake they can snake
V-ing form
I can be snaking you can be snaking he can be snaking we can be snaking you can be snaking they can be snaking
Perfect
I can have snaked you can have snaked he can have snaked we can have snaked you can have snaked they can have snaked
V-ing perfect
I can have been snaking you can have been snaking he can have been snaking we can have been snaking you can have been snaking they can have been snaking
Negation
Simple form
I can't snake you can't snake he can't snake we can't snake you can't snake they can't snake
V-ing form
I can't be snaking you can't be snaking he can't be snaking we can't be snaking you can't be snaking they can't be snaking
Perfect
I can't have snaked you can't have snaked he can't have snaked we can't have snaked you can't have snaked they can't have snaked
V-ing perfect
I can't have been snaking you can't have been snaking he can't have been snaking we can't have been snaking you can't have been snaking they can't have been snaking
Interrogative form
Simple form
can I snake? can you snake? can he snake? can we snake? can you snake? can they snake?
V-ing form
can I be snaking? can you be snaking? can he be snaking? can we be snaking? can you be snaking? can they be snaking?
Perfect
can I have snaked? can you have snaked? can he have snaked? can we have snaked? can you have snaked? can they have snaked?
V-ing perfect
can I have been snaking? can you have been snaking? can he have been snaking? can we have been snaking? can you have been snaking? can they have been snaking?
Interro-negative form
Simple form
can't I snake? can't you snake? can't he snake? can't we snake? can't you snake? can't they snake?
V-ing form
can't I be snaking? can't you be snaking? can't he be snaking? can't we be snaking? can't you be snaking? can't they be snaking?
Perfect
can't I have snaked? can't you have snaked? can't he have snaked? can't we have snaked? can't you have snaked? can't they have snaked?
V-ing perfect
can't I have been snaking? can't you have been snaking? can't he have been snaking? can't we have been snaking? can't you have been snaking? can't they have been snaking?