could step
Verbo regular: step - stepped- stepped

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could step
you could step
she could step
we could step
you could step
they could step 	I could be stepping
you could be stepping
she could be stepping
we could be stepping
you could be stepping
they could be stepping	I could have stepped
you could have stepped
she could have stepped
we could have stepped
you could have stepped
they could have stepped	I could have been stepping
you could have been stepping
she could have been stepping
we could have been stepping
you could have been stepping
they could have been stepping	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't step
you couldn't step
she couldn't step
we couldn't step
you couldn't step
they couldn't step 	I couldn't be stepping
you couldn't be stepping
she couldn't be stepping
we couldn't be stepping
you couldn't be stepping
they couldn't be stepping	I couldn't have stepped
you couldn't have stepped
she couldn't have stepped
we couldn't have stepped
you couldn't have stepped
they couldn't have stepped	I couldn't have been stepping
you couldn't have been stepping
she couldn't have been stepping
we couldn't have been stepping
you couldn't have been stepping
they couldn't have been stepping	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I step?
could you step?
could she step?
could we step?
could you step?
could they step? 	could I be stepping?
could you be stepping?
could she be stepping?
could we be stepping?
could you be stepping?
could they be stepping? 	could I have stepped?
could you have stepped?
could she have stepped?
could we have stepped?
could you have stepped?
could they have stepped? 	could I have been stepping?
could you have been stepping?
could she have been stepping?
could we have been stepping?
could you have been stepping?
could they have been stepping? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I step?
couldn't you step?
couldn't she step?
couldn't we step?
couldn't you step?
couldn't they step? 	couldn't I be stepping?
couldn't you be stepping?
couldn't she be stepping?
couldn't we be stepping?
couldn't you be stepping?
couldn't they be stepping? 	couldn't I have stepped?
couldn't you have stepped?
couldn't she have stepped?
couldn't we have stepped?
couldn't you have stepped?
couldn't they have stepped? 	couldn't I have been stepping?
couldn't you have been stepping?
couldn't she have been stepping?
couldn't we have been stepping?
couldn't you have been stepping?
couldn't they have been stepping?