I can catch you can catch she can catch we can catch you can catch they can catch
V-ing form
I can be catching you can be catching she can be catching we can be catching you can be catching they can be catching
Perfect
I can have caught you can have caught she can have caught we can have caught you can have caught they can have caught
V-ing perfect
I can have been catching you can have been catching she can have been catching we can have been catching you can have been catching they can have been catching
Negation
Simple form
I can't catch you can't catch she can't catch we can't catch you can't catch they can't catch
V-ing form
I can't be catching you can't be catching she can't be catching we can't be catching you can't be catching they can't be catching
Perfect
I can't have caught you can't have caught she can't have caught we can't have caught you can't have caught they can't have caught
V-ing perfect
I can't have been catching you can't have been catching she can't have been catching we can't have been catching you can't have been catching they can't have been catching
Interrogative form
Simple form
can I catch? can you catch? can she catch? can we catch? can you catch? can they catch?
V-ing form
can I be catching? can you be catching? can she be catching? can we be catching? can you be catching? can they be catching?
Perfect
can I have caught? can you have caught? can she have caught? can we have caught? can you have caught? can they have caught?
V-ing perfect
can I have been catching? can you have been catching? can she have been catching? can we have been catching? can you have been catching? can they have been catching?
Interro-negative form
Simple form
can't I catch? can't you catch? can't she catch? can't we catch? can't you catch? can't they catch?
V-ing form
can't I be catching? can't you be catching? can't she be catching? can't we be catching? can't you be catching? can't they be catching?
Perfect
can't I have caught? can't you have caught? can't she have caught? can't we have caught? can't you have caught? can't they have caught?
V-ing perfect
can't I have been catching? can't you have been catching? can't she have been catching? can't we have been catching? can't you have been catching? can't they have been catching?