Column 5 has 3 beads. Column 2 has 2 beads. Different depth → blue (≠).
- Column 6 starts, so use Rule 1: compare Column 5 with Column 2, 3 columns further back.
- Column 5 has 3 beads. Column 2 has 2 beads. Different depth → blue (≠).
Common table reading watchout: Comparing the wrong columns. Compare Column 5, the one that just finished, with Column 2.