can backtrack
Regular verb: backtrack - backtracked- backtracked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can backtrack
you can backtrack
she can backtrack
we can backtrack
you can backtrack
they can backtrack 	I can be backtracking
you can be backtracking
she can be backtracking
we can be backtracking
you can be backtracking
they can be backtracking	I can have backtracked
you can have backtracked
she 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
she 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 can't backtrack
you can't backtrack
she can't backtrack
we can't backtrack
you can't backtrack
they can't backtrack 	I can't be backtracking
you can't be backtracking
she can't be backtracking
we can't be backtracking
you can't be backtracking
they can't be backtracking	I can't have backtracked
you can't have backtracked
she can't have backtracked
we can't have backtracked
you can't have backtracked
they can't have backtracked	I can't have been backtracking
you can't have been backtracking
she can't have been backtracking
we can't have been backtracking
you can't have been backtracking
they can't have been backtracking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I backtrack?
can you backtrack?
can she backtrack?
can we backtrack?
can you backtrack?
can they backtrack? 	can I be backtracking?
can you be backtracking?
can she be backtracking?
can we be backtracking?
can you be backtracking?
can they be backtracking? 	can I have backtracked?
can you have backtracked?
can she 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 she 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't I backtrack?
can't you backtrack?
can't she backtrack?
can't we backtrack?
can't you backtrack?
can't they backtrack? 	can't I be backtracking?
can't you be backtracking?
can't she be backtracking?
can't we be backtracking?
can't you be backtracking?
can't they be backtracking? 	can't I have backtracked?
can't you have backtracked?
can't she have backtracked?
can't we have backtracked?
can't you have backtracked?
can't they have backtracked? 	can't I have been backtracking?
can't you have been backtracking?
can't she have been backtracking?
can't we have been backtracking?
can't you have been backtracking?
can't they have been backtracking?