Kwesịrị ekwesị maka iji na IIA, IIB,IIC Mgbawa gas dị ize ndụ zone1 na zone2.
Uzuzu ọkụ IIIA,IIIB,IIIC mpaghara 21 na mpaghara 22
Ex-Mark:
Ex db IIC T* Gb,Ex tb IIIC T* Db.