I can glide you can glide he can glide we can glide you can glide they can glide
V-ing form
I can be gliding you can be gliding he can be gliding we can be gliding you can be gliding they can be gliding
Perfect
I can have glided you can have glided he can have glided we can have glided you can have glided they can have glided
V-ing perfect
I can have been gliding you can have been gliding he can have been gliding we can have been gliding you can have been gliding they can have been gliding
Negation
Simple form
I can't glide you can't glide he can't glide we can't glide you can't glide they can't glide
V-ing form
I can't be gliding you can't be gliding he can't be gliding we can't be gliding you can't be gliding they can't be gliding
Perfect
I can't have glided you can't have glided he can't have glided we can't have glided you can't have glided they can't have glided
V-ing perfect
I can't have been gliding you can't have been gliding he can't have been gliding we can't have been gliding you can't have been gliding they can't have been gliding
Interrogative form
Simple form
can I glide? can you glide? can he glide? can we glide? can you glide? can they glide?
V-ing form
can I be gliding? can you be gliding? can he be gliding? can we be gliding? can you be gliding? can they be gliding?
Perfect
can I have glided? can you have glided? can he have glided? can we have glided? can you have glided? can they have glided?
V-ing perfect
can I have been gliding? can you have been gliding? can he have been gliding? can we have been gliding? can you have been gliding? can they have been gliding?
Interro-negative form
Simple form
can't I glide? can't you glide? can't he glide? can't we glide? can't you glide? can't they glide?
V-ing form
can't I be gliding? can't you be gliding? can't he be gliding? can't we be gliding? can't you be gliding? can't they be gliding?
Perfect
can't I have glided? can't you have glided? can't he have glided? can't we have glided? can't you have glided? can't they have glided?
V-ing perfect
can't I have been gliding? can't you have been gliding? can't he have been gliding? can't we have been gliding? can't you have been gliding? can't they have been gliding?