could unstep
Regular verb: unstep - unsteped- unsteped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could unstep
you could unstep
he could unstep
we could unstep
you could unstep
they could unstep 	I could be unsteping
you could be unsteping
he could be unsteping
we could be unsteping
you could be unsteping
they could be unsteping	I could have unsteped
you could have unsteped
he could have unsteped
we could have unsteped
you could have unsteped
they could have unsteped	I could have been unsteping
you could have been unsteping
he could have been unsteping
we could have been unsteping
you could have been unsteping
they could have been unsteping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not unstep
you could not unstep
he could not unstep
we could not unstep
you could not unstep
they could not unstep 	I could not be unsteping
you could not be unsteping
he could not be unsteping
we could not be unsteping
you could not be unsteping
they could not be unsteping	I could not have unsteped
you could not have unsteped
he could not have unsteped
we could not have unsteped
you could not have unsteped
they could not have unsteped	I could not have been unsteping
you could not have been unsteping
he could not have been unsteping
we could not have been unsteping
you could not have been unsteping
they could not have been unsteping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I unstep?
could you unstep?
could he unstep?
could we unstep?
could you unstep?
could they unstep? 	could I be unsteping?
could you be unsteping?
could he be unsteping?
could we be unsteping?
could you be unsteping?
could they be unsteping? 	could I have unsteped?
could you have unsteped?
could he have unsteped?
could we have unsteped?
could you have unsteped?
could they have unsteped? 	could I have been unsteping?
could you have been unsteping?
could he have been unsteping?
could we have been unsteping?
could you have been unsteping?
could they have been unsteping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not unstep?
could you not unstep?
could he not unstep?
could we not unstep?
could you not unstep?
could they not unstep? 	could I not be unsteping?
could you not be unsteping?
could he not be unsteping?
could we not be unsteping?
could you not be unsteping?
could they not be unsteping? 	could I not have unsteped?
could you not have unsteped?
could he not have unsteped?
could we not have unsteped?
could you not have unsteped?
could they not have unsteped? 	could I not have been unsteping?
could you not have been unsteping?
could he not have been unsteping?
could we not have been unsteping?
could you not have been unsteping?
could they not have been unsteping?