'Side's' in the Bible

On the east side, 4,500 cubits, also three gates: one gate of Joseph, one gate of Benjamin, one gate of Dan.

On the south side, 4,500 cubits, by measurement, also three gates: one gate of Simeon, one gate of Issachar, one gate of Zebulun.

On the west side, 4,500 cubits, three gates: one gate of Gad, one gate of Asher, one gate of Naphtali.