Ilungele ukusetshenziswa e-IIA, iib, iic ukuqhuma igesi igesi yegesi yegesi1 ne-zone2.
Uthuli oluhlanzekile lwe-IIIA, i-IIIB, IIC Zone 21 neBone 22
I-Ex-Maka:
Ex db IIC T * GB, ex TB IIIC T * DB.