Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could assign charge you could assign charge he could assign charge we could assign charge you could assign charge they could assign charge
V-ing form
I could be assign charging you could be assign charging he could be assign charging we could be assign charging you could be assign charging they could be assign charging
Perfect
I could have assign charged you could have assign charged he could have assign charged we could have assign charged you could have assign charged they could have assign charged
V-ing perfect
I could have been assign charging you could have been assign charging he could have been assign charging we could have been assign charging you could have been assign charging they could have been assign charging
Negation
Simple form
I could not assign charge you could not assign charge he could not assign charge we could not assign charge you could not assign charge they could not assign charge
V-ing form
I could not be assign charging you could not be assign charging he could not be assign charging we could not be assign charging you could not be assign charging they could not be assign charging
Perfect
I could not have assign charged you could not have assign charged he could not have assign charged we could not have assign charged you could not have assign charged they could not have assign charged
V-ing perfect
I could not have been assign charging you could not have been assign charging he could not have been assign charging we could not have been assign charging you could not have been assign charging they could not have been assign charging
Interrogative form
Simple form
could I assign charge? could you assign charge? could he assign charge? could we assign charge? could you assign charge? could they assign charge?
V-ing form
could I be assign charging? could you be assign charging? could he be assign charging? could we be assign charging? could you be assign charging? could they be assign charging?
Perfect
could I have assign charged? could you have assign charged? could he have assign charged? could we have assign charged? could you have assign charged? could they have assign charged?
V-ing perfect
could I have been assign charging? could you have been assign charging? could he have been assign charging? could we have been assign charging? could you have been assign charging? could they have been assign charging?
Interro-negative form
Simple form
could I not assign charge? could you not assign charge? could he not assign charge? could we not assign charge? could you not assign charge? could they not assign charge?
V-ing form
could I not be assign charging? could you not be assign charging? could he not be assign charging? could we not be assign charging? could you not be assign charging? could they not be assign charging?
Perfect
could I not have assign charged? could you not have assign charged? could he not have assign charged? could we not have assign charged? could you not have assign charged? could they not have assign charged?
V-ing perfect
could I not have been assign charging? could you not have been assign charging? could he not have been assign charging? could we not have been assign charging? could you not have been assign charging? could they not have been assign charging?