This bead is at Row 3. Column 5 stopped at Row 2, one row above → blue (≠).
- Column 7 goes down to Row 3, so use Rule 2: look 2 columns back, at Column 5.
- Column 5 stopped at Row 2, one row above → blue (≠).
Common table reading watchout: Thinking "no bead at this row" means blue. It is blue only when Column 5 stopped exactly one row above this bead.