can backspace
Regular verb: backspace - backspaced- backspaced

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can backspace
you can backspace
he can backspace
we can backspace
you can backspace
they can backspace 	I can be backspacing
you can be backspacing
he can be backspacing
we can be backspacing
you can be backspacing
they can be backspacing	I can have backspaced
you can have backspaced
he can have backspaced
we can have backspaced
you can have backspaced
they can have backspaced	I can have been backspacing
you can have been backspacing
he can have been backspacing
we can have been backspacing
you can have been backspacing
they can have been backspacing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't backspace
you can't backspace
he can't backspace
we can't backspace
you can't backspace
they can't backspace 	I can't be backspacing
you can't be backspacing
he can't be backspacing
we can't be backspacing
you can't be backspacing
they can't be backspacing	I can't have backspaced
you can't have backspaced
he can't have backspaced
we can't have backspaced
you can't have backspaced
they can't have backspaced	I can't have been backspacing
you can't have been backspacing
he can't have been backspacing
we can't have been backspacing
you can't have been backspacing
they can't have been backspacing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I backspace?
can you backspace?
can he backspace?
can we backspace?
can you backspace?
can they backspace? 	can I be backspacing?
can you be backspacing?
can he be backspacing?
can we be backspacing?
can you be backspacing?
can they be backspacing? 	can I have backspaced?
can you have backspaced?
can he have backspaced?
can we have backspaced?
can you have backspaced?
can they have backspaced? 	can I have been backspacing?
can you have been backspacing?
can he have been backspacing?
can we have been backspacing?
can you have been backspacing?
can they have been backspacing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I backspace?
can't you backspace?
can't he backspace?
can't we backspace?
can't you backspace?
can't they backspace? 	can't I be backspacing?
can't you be backspacing?
can't he be backspacing?
can't we be backspacing?
can't you be backspacing?
can't they be backspacing? 	can't I have backspaced?
can't you have backspaced?
can't he have backspaced?
can't we have backspaced?
can't you have backspaced?
can't they have backspaced? 	can't I have been backspacing?
can't you have been backspacing?
can't he have been backspacing?
can't we have been backspacing?
can't you have been backspacing?
can't they have been backspacing?