I could investigate you could investigate she could investigate we could investigate you could investigate they could investigate
Form mit V-ing
I could be investigating you could be investigating she could be investigating we could be investigating you could be investigating they could be investigating
Perfekt
I could have investigated you could have investigated she could have investigated we could have investigated you could have investigated they could have investigated
Perfekt mit V-ing
I could have been investigating you could have been investigating she could have been investigating we could have been investigating you could have been investigating they could have been investigating
Negation
Einfache Form
I could not investigate you could not investigate she could not investigate we could not investigate you could not investigate they could not investigate
Form mit V-ing
I could not be investigating you could not be investigating she could not be investigating we could not be investigating you could not be investigating they could not be investigating
Perfekt
I could not have investigated you could not have investigated she could not have investigated we could not have investigated you could not have investigated they could not have investigated
Perfekt mit V-ing
I could not have been investigating you could not have been investigating she could not have been investigating we could not have been investigating you could not have been investigating they could not have been investigating
Fragende Form
Einfache Form
could I investigate? could you investigate? could she investigate? could we investigate? could you investigate? could they investigate?
Form mit V-ing
could I be investigating? could you be investigating? could she be investigating? could we be investigating? could you be investigating? could they be investigating?
Perfekt
could I have investigated? could you have investigated? could she have investigated? could we have investigated? could you have investigated? could they have investigated?
Perfekt mit V-ing
could I have been investigating? could you have been investigating? could she have been investigating? could we have been investigating? could you have been investigating? could they have been investigating?
Fragende Negation Form
Einfache Form
could I not investigate? could you not investigate? could she not investigate? could we not investigate? could you not investigate? could they not investigate?
Form mit V-ing
could I not be investigating? could you not be investigating? could she not be investigating? could we not be investigating? could you not be investigating? could they not be investigating?
Perfekt
could I not have investigated? could you not have investigated? could she not have investigated? could we not have investigated? could you not have investigated? could they not have investigated?
Perfekt mit V-ing
could I not have been investigating? could you not have been investigating? could she not have been investigating? could we not have been investigating? could you not have been investigating? could they not have been investigating?