The Lucas 4/7 cut whole, beside the three bands cut before it

One row per wrecking offset on each band, one cell per rise, coarse on the left, with each band's width in proportion to the rises it holds. A pale cell is a rise at which that offset's cut recovers and has no survivor to report; a dark cell keeps one of the band's own counted pair and a warm cell keeps a family off it, so a change of answer is where the tone changes. The Lucas 4/7 is the test the branch account most needed: 86 rises, 774 stems, 144 wrecks across two offsets and not one change of the surviving family. Across the four bands drawn, 1347 cuts wreck of 5396 grown. The dashed rule on each row is that band's own handover, where its two contact steps change places.