English verb conjugation
COULD BACKSPACE

Regular verb: backspace - backspaced - backspaced

Affirmation

Simple form	V-ing form
I could backspace you could backspace she could backspace we could backspace you could backspace they could backspace	I could be backspacing you could be backspacing she could be backspacing we could be backspacing you could be backspacing they could be backspacing
Perfect	V-ing perfect
I could have backspaced you could have backspaced she could have backspaced we could have backspaced you could have backspaced they could have backspaced	I could have been backspacing you could have been backspacing she could have been backspacing we could have been backspacing you could have been backspacing they could have been backspacing

Negation

Simple form	V-ing form
I couldn't backspace you couldn't backspace she couldn't backspace we couldn't backspace you couldn't backspace they couldn't backspace	I couldn't be backspacing you couldn't be backspacing she couldn't be backspacing we couldn't be backspacing you couldn't be backspacing they couldn't be backspacing
Perfect	V-ing perfect
I couldn't have backspaced you couldn't have backspaced she couldn't have backspaced we couldn't have backspaced you couldn't have backspaced they couldn't have backspaced	I couldn't have been backspacing you couldn't have been backspacing she couldn't have been backspacing we couldn't have been backspacing you couldn't have been backspacing they couldn't have been backspacing

Interrogative form

Simple form	V-ing form
could I backspace? could you backspace? could she backspace? could we backspace? could you backspace? could they backspace?	could I be backspacing? could you be backspacing? could she be backspacing? could we be backspacing? could you be backspacing? could they be backspacing?
Perfect	V-ing perfect
could I have backspaced? could you have backspaced? could she have backspaced? could we have backspaced? could you have backspaced? could they have backspaced?	could I have been backspacing? could you have been backspacing? could she have been backspacing? could we have been backspacing? could you have been backspacing? could they have been backspacing?

Interro-negative form

Simple form	V-ing form
couldn't I backspace? couldn't you backspace? couldn't she backspace? couldn't we backspace? couldn't you backspace? couldn't they backspace?	couldn't I be backspacing? couldn't you be backspacing? couldn't she be backspacing? couldn't we be backspacing? couldn't you be backspacing? couldn't they be backspacing?
Perfect	V-ing perfect
couldn't I have backspaced? couldn't you have backspaced? couldn't she have backspaced? couldn't we have backspaced? couldn't you have backspaced? couldn't they have backspaced?	couldn't I have been backspacing? couldn't you have been backspacing? couldn't she have been backspacing? couldn't we have been backspacing? couldn't you have been backspacing? couldn't they have been backspacing?