can backtrack
Regular verb: backtrack - backtracked- backtracked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can backtrack
you can backtrack
he can backtrack
we can backtrack
you can backtrack
they can backtrack 	I can be backtracking
you can be backtracking
he can be backtracking
we can be backtracking
you can be backtracking
they can be backtracking	I can have backtracked
you can have backtracked
he can have backtracked
we can have backtracked
you can have backtracked
they can have backtracked	I can have been backtracking
you can have been backtracking
he can have been backtracking
we can have been backtracking
you can have been backtracking
they can have been backtracking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot backtrack
you cannot backtrack
he cannot backtrack
we cannot backtrack
you cannot backtrack
they cannot backtrack 	I cannot be backtracking
you cannot be backtracking
he cannot be backtracking
we cannot be backtracking
you cannot be backtracking
they cannot be backtracking	I cannot have backtracked
you cannot have backtracked
he cannot have backtracked
we cannot have backtracked
you cannot have backtracked
they cannot have backtracked	I cannot have been backtracking
you cannot have been backtracking
he cannot have been backtracking
we cannot have been backtracking
you cannot have been backtracking
they cannot have been backtracking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I backtrack?
can you backtrack?
can he backtrack?
can we backtrack?
can you backtrack?
can they backtrack? 	can I be backtracking?
can you be backtracking?
can he be backtracking?
can we be backtracking?
can you be backtracking?
can they be backtracking? 	can I have backtracked?
can you have backtracked?
can he have backtracked?
can we have backtracked?
can you have backtracked?
can they have backtracked? 	can I have been backtracking?
can you have been backtracking?
can he have been backtracking?
can we have been backtracking?
can you have been backtracking?
can they have been backtracking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not backtrack?
can you not backtrack?
can he not backtrack?
can we not backtrack?
can you not backtrack?
can they not backtrack? 	can I not be backtracking?
can you not be backtracking?
can he not be backtracking?
can we not be backtracking?
can you not be backtracking?
can they not be backtracking? 	can I not have backtracked?
can you not have backtracked?
can he not have backtracked?
can we not have backtracked?
can you not have backtracked?
can they not have backtracked? 	can I not have been backtracking?
can you not have been backtracking?
can he not have been backtracking?
can we not have been backtracking?
can you not have been backtracking?
can they not have been backtracking?