could backtrack
Regular verb: backtrack - backtracked- backtracked

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

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

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

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