I could quote you could quote he could quote we could quote you could quote they could quote
Forma con V-ing
I could be quoting you could be quoting he could be quoting we could be quoting you could be quoting they could be quoting
Perfecto
I could have quoted you could have quoted he could have quoted we could have quoted you could have quoted they could have quoted
Perfecto con V-ing
I could have been quoting you could have been quoting he could have been quoting we could have been quoting you could have been quoting they could have been quoting
Negación
Forma simple
I couldn't quote you couldn't quote he couldn't quote we couldn't quote you couldn't quote they couldn't quote
Forma con V-ing
I couldn't be quoting you couldn't be quoting he couldn't be quoting we couldn't be quoting you couldn't be quoting they couldn't be quoting
Perfecto
I couldn't have quoted you couldn't have quoted he couldn't have quoted we couldn't have quoted you couldn't have quoted they couldn't have quoted
Perfecto con V-ing
I couldn't have been quoting you couldn't have been quoting he couldn't have been quoting we couldn't have been quoting you couldn't have been quoting they couldn't have been quoting
Forma interrogativa
Forma simple
could I quote? could you quote? could he quote? could we quote? could you quote? could they quote?
Forma con V-ing
could I be quoting? could you be quoting? could he be quoting? could we be quoting? could you be quoting? could they be quoting?
Perfecto
could I have quoted? could you have quoted? could he have quoted? could we have quoted? could you have quoted? could they have quoted?
Perfecto con V-ing
could I have been quoting? could you have been quoting? could he have been quoting? could we have been quoting? could you have been quoting? could they have been quoting?
Forma interro-negativa
Forma simple
couldn't I quote? couldn't you quote? couldn't he quote? couldn't we quote? couldn't you quote? couldn't they quote?
Forma con V-ing
couldn't I be quoting? couldn't you be quoting? couldn't he be quoting? couldn't we be quoting? couldn't you be quoting? couldn't they be quoting?
Perfecto
couldn't I have quoted? couldn't you have quoted? couldn't he have quoted? couldn't we have quoted? couldn't you have quoted? couldn't they have quoted?
Perfecto con V-ing
couldn't I have been quoting? couldn't you have been quoting? couldn't he have been quoting? couldn't we have been quoting? couldn't you have been quoting? couldn't they have been quoting?