I could invoice you could invoice he could invoice we could invoice you could invoice they could invoice
Forme en 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
Perfect
I could have invoiced you could have invoiced he could have invoiced we could have invoiced you could have invoiced they could have invoiced
Perfect en 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
Négation
Forme simple
I couldn't invoice you couldn't invoice he couldn't invoice we couldn't invoice you couldn't invoice they couldn't invoice
Forme en V-ing
I couldn't be invoicing you couldn't be invoicing he couldn't be invoicing we couldn't be invoicing you couldn't be invoicing they couldn't be invoicing
Perfect
I couldn't have invoiced you couldn't have invoiced he couldn't have invoiced we couldn't have invoiced you couldn't have invoiced they couldn't have invoiced
Perfect en V-ing
I couldn't have been invoicing you couldn't have been invoicing he couldn't have been invoicing we couldn't have been invoicing you couldn't have been invoicing they couldn't have been invoicing
Forme interrogative
Forme simple
could I invoice? could you invoice? could he invoice? could we invoice? could you invoice? could they invoice?
Forme en 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?
Perfect
could I have invoiced? could you have invoiced? could he have invoiced? could we have invoiced? could you have invoiced? could they have invoiced?
Perfect en 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?
Forme interro-négative
Forme simple
couldn't I invoice? couldn't you invoice? couldn't he invoice? couldn't we invoice? couldn't you invoice? couldn't they invoice?
Forme en V-ing
couldn't I be invoicing? couldn't you be invoicing? couldn't he be invoicing? couldn't we be invoicing? couldn't you be invoicing? couldn't they be invoicing?
Perfect
couldn't I have invoiced? couldn't you have invoiced? couldn't he have invoiced? couldn't we have invoiced? couldn't you have invoiced? couldn't they have invoiced?
Perfect en V-ing
couldn't I have been invoicing? couldn't you have been invoicing? couldn't he have been invoicing? couldn't we have been invoicing? couldn't you have been invoicing? couldn't they have been invoicing?