could mul
Verbo regular: mul - muled- muled

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could mul
you could mul
he could mul
we could mul
you could mul
they could mul 	I could be muling
you could be muling
he could be muling
we could be muling
you could be muling
they could be muling	I could have muled
you could have muled
he could have muled
we could have muled
you could have muled
they could have muled	I could have been muling
you could have been muling
he could have been muling
we could have been muling
you could have been muling
they could have been muling	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't mul
you couldn't mul
he couldn't mul
we couldn't mul
you couldn't mul
they couldn't mul 	I couldn't be muling
you couldn't be muling
he couldn't be muling
we couldn't be muling
you couldn't be muling
they couldn't be muling	I couldn't have muled
you couldn't have muled
he couldn't have muled
we couldn't have muled
you couldn't have muled
they couldn't have muled	I couldn't have been muling
you couldn't have been muling
he couldn't have been muling
we couldn't have been muling
you couldn't have been muling
they couldn't have been muling	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I mul?
could you mul?
could he mul?
could we mul?
could you mul?
could they mul? 	could I be muling?
could you be muling?
could he be muling?
could we be muling?
could you be muling?
could they be muling? 	could I have muled?
could you have muled?
could he have muled?
could we have muled?
could you have muled?
could they have muled? 	could I have been muling?
could you have been muling?
could he have been muling?
could we have been muling?
could you have been muling?
could they have been muling? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I mul?
couldn't you mul?
couldn't he mul?
couldn't we mul?
couldn't you mul?
couldn't they mul? 	couldn't I be muling?
couldn't you be muling?
couldn't he be muling?
couldn't we be muling?
couldn't you be muling?
couldn't they be muling? 	couldn't I have muled?
couldn't you have muled?
couldn't he have muled?
couldn't we have muled?
couldn't you have muled?
couldn't they have muled? 	couldn't I have been muling?
couldn't you have been muling?
couldn't he have been muling?
couldn't we have been muling?
couldn't you have been muling?
couldn't they have been muling?