I can ride you can ride she can ride we can ride you can ride they can ride
V-ing form
I can be riding you can be riding she can be riding we can be riding you can be riding they can be riding
Perfect
I can have ridden you can have ridden she can have ridden we can have ridden you can have ridden they can have ridden
V-ing perfect
I can have been riding you can have been riding she can have been riding we can have been riding you can have been riding they can have been riding
Negation
Simple form
I can't ride you can't ride she can't ride we can't ride you can't ride they can't ride
V-ing form
I can't be riding you can't be riding she can't be riding we can't be riding you can't be riding they can't be riding
Perfect
I can't have ridden you can't have ridden she can't have ridden we can't have ridden you can't have ridden they can't have ridden
V-ing perfect
I can't have been riding you can't have been riding she can't have been riding we can't have been riding you can't have been riding they can't have been riding
Interrogative form
Simple form
can I ride? can you ride? can she ride? can we ride? can you ride? can they ride?
V-ing form
can I be riding? can you be riding? can she be riding? can we be riding? can you be riding? can they be riding?
Perfect
can I have ridden? can you have ridden? can she have ridden? can we have ridden? can you have ridden? can they have ridden?
V-ing perfect
can I have been riding? can you have been riding? can she have been riding? can we have been riding? can you have been riding? can they have been riding?
Interro-negative form
Simple form
can't I ride? can't you ride? can't she ride? can't we ride? can't you ride? can't they ride?
V-ing form
can't I be riding? can't you be riding? can't she be riding? can't we be riding? can't you be riding? can't they be riding?
Perfect
can't I have ridden? can't you have ridden? can't she have ridden? can't we have ridden? can't you have ridden? can't they have ridden?
V-ing perfect
can't I have been riding? can't you have been riding? can't she have been riding? can't we have been riding? can't you have been riding? can't they have been riding?