Conjugación del verbo inglés
COULD STUD

Verbo regular: stud - studded - studded

Afirmación

Forma simple	Forma con V-ing
I could stud you could stud he could stud we could stud you could stud they could stud	I could be studding you could be studding he could be studding we could be studding you could be studding they could be studding
Perfecto	Perfecto con V-ing
I could have studded you could have studded he could have studded we could have studded you could have studded they could have studded	I could have been studding you could have been studding he could have been studding we could have been studding you could have been studding they could have been studding

Negación

Forma simple	Forma con V-ing
I couldn't stud you couldn't stud he couldn't stud we couldn't stud you couldn't stud they couldn't stud	I couldn't be studding you couldn't be studding he couldn't be studding we couldn't be studding you couldn't be studding they couldn't be studding
Perfecto	Perfecto con V-ing
I couldn't have studded you couldn't have studded he couldn't have studded we couldn't have studded you couldn't have studded they couldn't have studded	I couldn't have been studding you couldn't have been studding he couldn't have been studding we couldn't have been studding you couldn't have been studding they couldn't have been studding

Forma interrogativa

Forma simple	Forma con V-ing
could I stud? could you stud? could he stud? could we stud? could you stud? could they stud?	could I be studding? could you be studding? could he be studding? could we be studding? could you be studding? could they be studding?
Perfecto	Perfecto con V-ing
could I have studded? could you have studded? could he have studded? could we have studded? could you have studded? could they have studded?	could I have been studding? could you have been studding? could he have been studding? could we have been studding? could you have been studding? could they have been studding?

Forma interro-negativa

Forma simple	Forma con V-ing
couldn't I stud? couldn't you stud? couldn't he stud? couldn't we stud? couldn't you stud? couldn't they stud?	couldn't I be studding? couldn't you be studding? couldn't he be studding? couldn't we be studding? couldn't you be studding? couldn't they be studding?
Perfecto	Perfecto con V-ing
couldn't I have studded? couldn't you have studded? couldn't he have studded? couldn't we have studded? couldn't you have studded? couldn't they have studded?	couldn't I have been studding? couldn't you have been studding? couldn't he have been studding? couldn't we have been studding? couldn't you have been studding? couldn't they have been studding?