I could progress you could progress she could progress we could progress you could progress they could progress
Forma con V-ing
I could be progressing you could be progressing she could be progressing we could be progressing you could be progressing they could be progressing
Perfecto
I could have progressed you could have progressed she could have progressed we could have progressed you could have progressed they could have progressed
Perfecto con V-ing
I could have been progressing you could have been progressing she could have been progressing we could have been progressing you could have been progressing they could have been progressing
Negación
Forma simple
I could not progress you could not progress she could not progress we could not progress you could not progress they could not progress
Forma con V-ing
I could not be progressing you could not be progressing she could not be progressing we could not be progressing you could not be progressing they could not be progressing
Perfecto
I could not have progressed you could not have progressed she could not have progressed we could not have progressed you could not have progressed they could not have progressed
Perfecto con V-ing
I could not have been progressing you could not have been progressing she could not have been progressing we could not have been progressing you could not have been progressing they could not have been progressing
Forma interrogativa
Forma simple
could I progress? could you progress? could she progress? could we progress? could you progress? could they progress?
Forma con V-ing
could I be progressing? could you be progressing? could she be progressing? could we be progressing? could you be progressing? could they be progressing?
Perfecto
could I have progressed? could you have progressed? could she have progressed? could we have progressed? could you have progressed? could they have progressed?
Perfecto con V-ing
could I have been progressing? could you have been progressing? could she have been progressing? could we have been progressing? could you have been progressing? could they have been progressing?
Forma interro-negativa
Forma simple
could I not progress? could you not progress? could she not progress? could we not progress? could you not progress? could they not progress?
Forma con V-ing
could I not be progressing? could you not be progressing? could she not be progressing? could we not be progressing? could you not be progressing? could they not be progressing?
Perfecto
could I not have progressed? could you not have progressed? could she not have progressed? could we not have progressed? could you not have progressed? could they not have progressed?
Perfecto con V-ing
could I not have been progressing? could you not have been progressing? could she not have been progressing? could we not have been progressing? could you not have been progressing? could they not have been progressing?