must backspace
Verbo regolare: backspace - backspaced- backspaced

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must backspace
you must backspace
he must backspace
we must backspace
you must backspace
they must backspace 	I must be backspacing
you must be backspacing
he must be backspacing
we must be backspacing
you must be backspacing
they must be backspacing	I must have backspaced
you must have backspaced
he must have backspaced
we must have backspaced
you must have backspaced
they must have backspaced	I must have been backspacing
you must have been backspacing
he must have been backspacing
we must have been backspacing
you must have been backspacing
they must have been backspacing	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must not backspace
you must not backspace
he must not backspace
we must not backspace
you must not backspace
they must not backspace 	I must not be backspacing
you must not be backspacing
he must not be backspacing
we must not be backspacing
you must not be backspacing
they must not be backspacing	I must not have backspaced
you must not have backspaced
he must not have backspaced
we must not have backspaced
you must not have backspaced
they must not have backspaced	I must not have been backspacing
you must not have been backspacing
he must not have been backspacing
we must not have been backspacing
you must not have been backspacing
they must not have been backspacing	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I backspace?
must you backspace?
must he backspace?
must we backspace?
must you backspace?
must they backspace? 	must I be backspacing?
must you be backspacing?
must he be backspacing?
must we be backspacing?
must you be backspacing?
must they be backspacing? 	must I have backspaced?
must you have backspaced?
must he have backspaced?
must we have backspaced?
must you have backspaced?
must they have backspaced? 	must I have been backspacing?
must you have been backspacing?
must he have been backspacing?
must we have been backspacing?
must you have been backspacing?
must they have been backspacing? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I not backspace?
must you not backspace?
must he not backspace?
must we not backspace?
must you not backspace?
must they not backspace? 	must I not be backspacing?
must you not be backspacing?
must he not be backspacing?
must we not be backspacing?
must you not be backspacing?
must they not be backspacing? 	must I not have backspaced?
must you not have backspaced?
must he not have backspaced?
must we not have backspaced?
must you not have backspaced?
must they not have backspaced? 	must I not have been backspacing?
must you not have been backspacing?
must he not have been backspacing?
must we not have been backspacing?
must you not have been backspacing?
must they not have been backspacing?