north: 80 south: 0 east: 120 west: 0 rows: 8 cols: 12 * * * * * * * * * * * * 4 5 6 7 8 9 10 11 12 13 14 15 5 6 7 8 9 10 11 12 13 14 15 16 6 7 8 9 10 11 12 13 14 15 16 17 * * * * * * * * * * * * 8 9 10 11 12 13 14 15 16 17 18 19 9 10 11 12 13 14 15 16 17 18 19 20 10 11 12 13 14 15 16 17 18 19 20 21
