must backpedal
Regular verb: backpedal - backpedaled- backpedaled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must backpedal
you must backpedal
he must backpedal
we must backpedal
you must backpedal
they must backpedal 	I must be backpedaling
you must be backpedaling
he must be backpedaling
we must be backpedaling
you must be backpedaling
they must be backpedaling	I must have backpedaled
you must have backpedaled
he must have backpedaled
we must have backpedaled
you must have backpedaled
they must have backpedaled	I must have been backpedaling
you must have been backpedaling
he must have been backpedaling
we must have been backpedaling
you must have been backpedaling
they must have been backpedaling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not backpedal
you must not backpedal
he must not backpedal
we must not backpedal
you must not backpedal
they must not backpedal 	I must not be backpedaling
you must not be backpedaling
he must not be backpedaling
we must not be backpedaling
you must not be backpedaling
they must not be backpedaling	I must not have backpedaled
you must not have backpedaled
he must not have backpedaled
we must not have backpedaled
you must not have backpedaled
they must not have backpedaled	I must not have been backpedaling
you must not have been backpedaling
he must not have been backpedaling
we must not have been backpedaling
you must not have been backpedaling
they must not have been backpedaling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I backpedal?
must you backpedal?
must he backpedal?
must we backpedal?
must you backpedal?
must they backpedal? 	must I be backpedaling?
must you be backpedaling?
must he be backpedaling?
must we be backpedaling?
must you be backpedaling?
must they be backpedaling? 	must I have backpedaled?
must you have backpedaled?
must he have backpedaled?
must we have backpedaled?
must you have backpedaled?
must they have backpedaled? 	must I have been backpedaling?
must you have been backpedaling?
must he have been backpedaling?
must we have been backpedaling?
must you have been backpedaling?
must they have been backpedaling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not backpedal?
must you not backpedal?
must he not backpedal?
must we not backpedal?
must you not backpedal?
must they not backpedal? 	must I not be backpedaling?
must you not be backpedaling?
must he not be backpedaling?
must we not be backpedaling?
must you not be backpedaling?
must they not be backpedaling? 	must I not have backpedaled?
must you not have backpedaled?
must he not have backpedaled?
must we not have backpedaled?
must you not have backpedaled?
must they not have backpedaled? 	must I not have been backpedaling?
must you not have been backpedaling?
must he not have been backpedaling?
must we not have been backpedaling?
must you not have been backpedaling?
must they not have been backpedaling?