could tiptoe
Verbo regular: tiptoe - tiptoed- tiptoed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could tiptoe
you could tiptoe
she could tiptoe
we could tiptoe
you could tiptoe
they could tiptoe 	I could be tiptoing
you could be tiptoing
she could be tiptoing
we could be tiptoing
you could be tiptoing
they could be tiptoing	I could have tiptoed
you could have tiptoed
she could have tiptoed
we could have tiptoed
you could have tiptoed
they could have tiptoed	I could have been tiptoing
you could have been tiptoing
she could have been tiptoing
we could have been tiptoing
you could have been tiptoing
they could have been tiptoing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not tiptoe
you could not tiptoe
she could not tiptoe
we could not tiptoe
you could not tiptoe
they could not tiptoe 	I could not be tiptoing
you could not be tiptoing
she could not be tiptoing
we could not be tiptoing
you could not be tiptoing
they could not be tiptoing	I could not have tiptoed
you could not have tiptoed
she could not have tiptoed
we could not have tiptoed
you could not have tiptoed
they could not have tiptoed	I could not have been tiptoing
you could not have been tiptoing
she could not have been tiptoing
we could not have been tiptoing
you could not have been tiptoing
they could not have been tiptoing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I tiptoe?
could you tiptoe?
could she tiptoe?
could we tiptoe?
could you tiptoe?
could they tiptoe? 	could I be tiptoing?
could you be tiptoing?
could she be tiptoing?
could we be tiptoing?
could you be tiptoing?
could they be tiptoing? 	could I have tiptoed?
could you have tiptoed?
could she have tiptoed?
could we have tiptoed?
could you have tiptoed?
could they have tiptoed? 	could I have been tiptoing?
could you have been tiptoing?
could she have been tiptoing?
could we have been tiptoing?
could you have been tiptoing?
could they have been tiptoing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not tiptoe?
could you not tiptoe?
could she not tiptoe?
could we not tiptoe?
could you not tiptoe?
could they not tiptoe? 	could I not be tiptoing?
could you not be tiptoing?
could she not be tiptoing?
could we not be tiptoing?
could you not be tiptoing?
could they not be tiptoing? 	could I not have tiptoed?
could you not have tiptoed?
could she not have tiptoed?
could we not have tiptoed?
could you not have tiptoed?
could they not have tiptoed? 	could I not have been tiptoing?
could you not have been tiptoing?
could she not have been tiptoing?
could we not have been tiptoing?
could you not have been tiptoing?
could they not have been tiptoing?