could dial
Verbo regular: dial - dialled- dialled

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could dial
you could dial
she could dial
we could dial
you could dial
they could dial 	I could be dialling
you could be dialling
she could be dialling
we could be dialling
you could be dialling
they could be dialling	I could have dialled
you could have dialled
she could have dialled
we could have dialled
you could have dialled
they could have dialled	I could have been dialling
you could have been dialling
she could have been dialling
we could have been dialling
you could have been dialling
they could have been dialling	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't dial
you couldn't dial
she couldn't dial
we couldn't dial
you couldn't dial
they couldn't dial 	I couldn't be dialling
you couldn't be dialling
she couldn't be dialling
we couldn't be dialling
you couldn't be dialling
they couldn't be dialling	I couldn't have dialled
you couldn't have dialled
she couldn't have dialled
we couldn't have dialled
you couldn't have dialled
they couldn't have dialled	I couldn't have been dialling
you couldn't have been dialling
she couldn't have been dialling
we couldn't have been dialling
you couldn't have been dialling
they couldn't have been dialling	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I dial?
could you dial?
could she dial?
could we dial?
could you dial?
could they dial? 	could I be dialling?
could you be dialling?
could she be dialling?
could we be dialling?
could you be dialling?
could they be dialling? 	could I have dialled?
could you have dialled?
could she have dialled?
could we have dialled?
could you have dialled?
could they have dialled? 	could I have been dialling?
could you have been dialling?
could she have been dialling?
could we have been dialling?
could you have been dialling?
could they have been dialling? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I dial?
couldn't you dial?
couldn't she dial?
couldn't we dial?
couldn't you dial?
couldn't they dial? 	couldn't I be dialling?
couldn't you be dialling?
couldn't she be dialling?
couldn't we be dialling?
couldn't you be dialling?
couldn't they be dialling? 	couldn't I have dialled?
couldn't you have dialled?
couldn't she have dialled?
couldn't we have dialled?
couldn't you have dialled?
couldn't they have dialled? 	couldn't I have been dialling?
couldn't you have been dialling?
couldn't she have been dialling?
couldn't we have been dialling?
couldn't you have been dialling?
couldn't they have been dialling?