could rag
Verbo regular: rag - ragged- ragged

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could rag
you could rag
he could rag
we could rag
you could rag
they could rag 	I could be ragging
you could be ragging
he could be ragging
we could be ragging
you could be ragging
they could be ragging	I could have ragged
you could have ragged
he could have ragged
we could have ragged
you could have ragged
they could have ragged	I could have been ragging
you could have been ragging
he could have been ragging
we could have been ragging
you could have been ragging
they could have been ragging	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't rag
you couldn't rag
he couldn't rag
we couldn't rag
you couldn't rag
they couldn't rag 	I couldn't be ragging
you couldn't be ragging
he couldn't be ragging
we couldn't be ragging
you couldn't be ragging
they couldn't be ragging	I couldn't have ragged
you couldn't have ragged
he couldn't have ragged
we couldn't have ragged
you couldn't have ragged
they couldn't have ragged	I couldn't have been ragging
you couldn't have been ragging
he couldn't have been ragging
we couldn't have been ragging
you couldn't have been ragging
they couldn't have been ragging	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I rag?
could you rag?
could he rag?
could we rag?
could you rag?
could they rag? 	could I be ragging?
could you be ragging?
could he be ragging?
could we be ragging?
could you be ragging?
could they be ragging? 	could I have ragged?
could you have ragged?
could he have ragged?
could we have ragged?
could you have ragged?
could they have ragged? 	could I have been ragging?
could you have been ragging?
could he have been ragging?
could we have been ragging?
could you have been ragging?
could they have been ragging? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I rag?
couldn't you rag?
couldn't he rag?
couldn't we rag?
couldn't you rag?
couldn't they rag? 	couldn't I be ragging?
couldn't you be ragging?
couldn't he be ragging?
couldn't we be ragging?
couldn't you be ragging?
couldn't they be ragging? 	couldn't I have ragged?
couldn't you have ragged?
couldn't he have ragged?
couldn't we have ragged?
couldn't you have ragged?
couldn't they have ragged? 	couldn't I have been ragging?
couldn't you have been ragging?
couldn't he have been ragging?
couldn't we have been ragging?
couldn't you have been ragging?
couldn't they have been ragging?