I can slide you can slide she can slide we can slide you can slide they can slide
V-ing form
I can be sliding you can be sliding she can be sliding we can be sliding you can be sliding they can be sliding
Perfect
I can have slid you can have slid she can have slid we can have slid you can have slid they can have slid
V-ing perfect
I can have been sliding you can have been sliding she can have been sliding we can have been sliding you can have been sliding they can have been sliding
Negation
Simple form
I cannot slide you cannot slide she cannot slide we cannot slide you cannot slide they cannot slide
V-ing form
I cannot be sliding you cannot be sliding she cannot be sliding we cannot be sliding you cannot be sliding they cannot be sliding
Perfect
I cannot have slid you cannot have slid she cannot have slid we cannot have slid you cannot have slid they cannot have slid
V-ing perfect
I cannot have been sliding you cannot have been sliding she cannot have been sliding we cannot have been sliding you cannot have been sliding they cannot have been sliding
Interrogative form
Simple form
can I slide? can you slide? can she slide? can we slide? can you slide? can they slide?
V-ing form
can I be sliding? can you be sliding? can she be sliding? can we be sliding? can you be sliding? can they be sliding?
Perfect
can I have slid? can you have slid? can she have slid? can we have slid? can you have slid? can they have slid?
V-ing perfect
can I have been sliding? can you have been sliding? can she have been sliding? can we have been sliding? can you have been sliding? can they have been sliding?
Interro-negative form
Simple form
can I not slide? can you not slide? can she not slide? can we not slide? can you not slide? can they not slide?
V-ing form
can I not be sliding? can you not be sliding? can she not be sliding? can we not be sliding? can you not be sliding? can they not be sliding?
Perfect
can I not have slid? can you not have slid? can she not have slid? can we not have slid? can you not have slid? can they not have slid?
V-ing perfect
can I not have been sliding? can you not have been sliding? can she not have been sliding? can we not have been sliding? can you not have been sliding? can they not have been sliding?