I could invoice you could invoice he could invoice we could invoice you could invoice they could invoice
Forma con V-ing
I could be invoicing you could be invoicing he could be invoicing we could be invoicing you could be invoicing they could be invoicing
Perfecto
I could have invoiced you could have invoiced he could have invoiced we could have invoiced you could have invoiced they could have invoiced
Perfecto con V-ing
I could have been invoicing you could have been invoicing he could have been invoicing we could have been invoicing you could have been invoicing they could have been invoicing
Negación
Forma simple
I could not invoice you could not invoice he could not invoice we could not invoice you could not invoice they could not invoice
Forma con V-ing
I could not be invoicing you could not be invoicing he could not be invoicing we could not be invoicing you could not be invoicing they could not be invoicing
Perfecto
I could not have invoiced you could not have invoiced he could not have invoiced we could not have invoiced you could not have invoiced they could not have invoiced
Perfecto con V-ing
I could not have been invoicing you could not have been invoicing he could not have been invoicing we could not have been invoicing you could not have been invoicing they could not have been invoicing
Forma interrogativa
Forma simple
could I invoice? could you invoice? could he invoice? could we invoice? could you invoice? could they invoice?
Forma con V-ing
could I be invoicing? could you be invoicing? could he be invoicing? could we be invoicing? could you be invoicing? could they be invoicing?
Perfecto
could I have invoiced? could you have invoiced? could he have invoiced? could we have invoiced? could you have invoiced? could they have invoiced?
Perfecto con V-ing
could I have been invoicing? could you have been invoicing? could he have been invoicing? could we have been invoicing? could you have been invoicing? could they have been invoicing?
Forma interro-negativa
Forma simple
could I not invoice? could you not invoice? could he not invoice? could we not invoice? could you not invoice? could they not invoice?
Forma con V-ing
could I not be invoicing? could you not be invoicing? could he not be invoicing? could we not be invoicing? could you not be invoicing? could they not be invoicing?
Perfecto
could I not have invoiced? could you not have invoiced? could he not have invoiced? could we not have invoiced? could you not have invoiced? could they not have invoiced?
Perfecto con V-ing
could I not have been invoicing? could you not have been invoicing? could he not have been invoicing? could we not have been invoicing? could you not have been invoicing? could they not have been invoicing?