could welter
Verbo regular: welter - weltered- weltered

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could welter
you could welter
he could welter
we could welter
you could welter
they could welter 	I could be weltering
you could be weltering
he could be weltering
we could be weltering
you could be weltering
they could be weltering	I could have weltered
you could have weltered
he could have weltered
we could have weltered
you could have weltered
they could have weltered	I could have been weltering
you could have been weltering
he could have been weltering
we could have been weltering
you could have been weltering
they could have been weltering	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not welter
you could not welter
he could not welter
we could not welter
you could not welter
they could not welter 	I could not be weltering
you could not be weltering
he could not be weltering
we could not be weltering
you could not be weltering
they could not be weltering	I could not have weltered
you could not have weltered
he could not have weltered
we could not have weltered
you could not have weltered
they could not have weltered	I could not have been weltering
you could not have been weltering
he could not have been weltering
we could not have been weltering
you could not have been weltering
they could not have been weltering	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I welter?
could you welter?
could he welter?
could we welter?
could you welter?
could they welter? 	could I be weltering?
could you be weltering?
could he be weltering?
could we be weltering?
could you be weltering?
could they be weltering? 	could I have weltered?
could you have weltered?
could he have weltered?
could we have weltered?
could you have weltered?
could they have weltered? 	could I have been weltering?
could you have been weltering?
could he have been weltering?
could we have been weltering?
could you have been weltering?
could they have been weltering? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not welter?
could you not welter?
could he not welter?
could we not welter?
could you not welter?
could they not welter? 	could I not be weltering?
could you not be weltering?
could he not be weltering?
could we not be weltering?
could you not be weltering?
could they not be weltering? 	could I not have weltered?
could you not have weltered?
could he not have weltered?
could we not have weltered?
could you not have weltered?
could they not have weltered? 	could I not have been weltering?
could you not have been weltering?
could he not have been weltering?
could we not have been weltering?
could you not have been weltering?
could they not have been weltering?