I can backslide you can backslide he can backslide we can backslide you can backslide they can backslide
V-ing form
I can be backsliding you can be backsliding he can be backsliding we can be backsliding you can be backsliding they can be backsliding
Perfect
I can have backslid, backslidden you can have backslid, backslidden he can have backslid, backslidden we can have backslid, backslidden you can have backslid, backslidden they can have backslid, backslidden
V-ing perfect
I can have been backsliding you can have been backsliding he can have been backsliding we can have been backsliding you can have been backsliding they can have been backsliding
Negation
Simple form
I cannot backslide you cannot backslide he cannot backslide we cannot backslide you cannot backslide they cannot backslide
V-ing form
I cannot be backsliding you cannot be backsliding he cannot be backsliding we cannot be backsliding you cannot be backsliding they cannot be backsliding
Perfect
I cannot have backslid, backslidden you cannot have backslid, backslidden he cannot have backslid, backslidden we cannot have backslid, backslidden you cannot have backslid, backslidden they cannot have backslid, backslidden
V-ing perfect
I cannot have been backsliding you cannot have been backsliding he cannot have been backsliding we cannot have been backsliding you cannot have been backsliding they cannot have been backsliding
Interrogative form
Simple form
can I backslide? can you backslide? can he backslide? can we backslide? can you backslide? can they backslide?
V-ing form
can I be backsliding? can you be backsliding? can he be backsliding? can we be backsliding? can you be backsliding? can they be backsliding?
Perfect
can I have backslid, backslidden? can you have backslid, backslidden? can he have backslid, backslidden? can we have backslid, backslidden? can you have backslid, backslidden? can they have backslid, backslidden?
V-ing perfect
can I have been backsliding? can you have been backsliding? can he have been backsliding? can we have been backsliding? can you have been backsliding? can they have been backsliding?
Interro-negative form
Simple form
can I not backslide? can you not backslide? can he not backslide? can we not backslide? can you not backslide? can they not backslide?
V-ing form
can I not be backsliding? can you not be backsliding? can he not be backsliding? can we not be backsliding? can you not be backsliding? can they not be backsliding?
Perfect
can I not have backslid, backslidden? can you not have backslid, backslidden? can he not have backslid, backslidden? can we not have backslid, backslidden? can you not have backslid, backslidden? can they not have backslid, backslidden?
V-ing perfect
can I not have been backsliding? can you not have been backsliding? can he not have been backsliding? can we not have been backsliding? can you not have been backsliding? can they not have been backsliding?