13 There were three gates on the east, three on the north, three on the south and three on the west.

Read Revelation 21:13 Using Other Translations

On the east three gates; on the north three gates; on the south three gates; and on the west three gates.
on the east three gates, on the north three gates, on the south three gates, and on the west three gates.
There were three gates on each side—east, north, south, and west.