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 can't backslide you can't backslide he can't backslide we can't backslide you can't backslide they can't backslide
V-ing form
I can't be backsliding you can't be backsliding he can't be backsliding we can't be backsliding you can't be backsliding they can't be backsliding
Perfect
I can't have backslid, backslidden you can't have backslid, backslidden he can't have backslid, backslidden we can't have backslid, backslidden you can't have backslid, backslidden they can't have backslid, backslidden
V-ing perfect
I can't have been backsliding you can't have been backsliding he can't have been backsliding we can't have been backsliding you can't have been backsliding they can't 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't I backslide? can't you backslide? can't he backslide? can't we backslide? can't you backslide? can't they backslide?
V-ing form
can't I be backsliding? can't you be backsliding? can't he be backsliding? can't we be backsliding? can't you be backsliding? can't they be backsliding?
Perfect
can't I have backslid, backslidden? can't you have backslid, backslidden? can't he have backslid, backslidden? can't we have backslid, backslidden? can't you have backslid, backslidden? can't they have backslid, backslidden?
V-ing perfect
can't I have been backsliding? can't you have been backsliding? can't he have been backsliding? can't we have been backsliding? can't you have been backsliding? can't they have been backsliding?