Kubalila kwabusena bwanyika iitali kabotu
Twalomba kuti utondezye bupati mumamita
A B,
B C,
C D,
D A - bupati bwamabazu aachibaka
U - busena buli kululyo
Akaambo kakubalila, pulogilamu iyoojana busena bwabusena, ma angle aatazyibidwe antoomwe abwaamba bwama diagonal.