W-0100

This word starts from Jakub Halfar's 6,747,801,798-letter word. In fourteen of his blocks I traded rows so that each block frees four trails, and moved those trails to one common insertion point, which saved 22 letters. I then cut the word at every step of weight 5 or more. No permutation window crosses those cuts, so the pieces can go in any order. Gurobi found the order with the most overlap between neighboring pieces, which saved 63 letters more than the original order. I then alternated Jakub Halfar's trailsearch, which moves and re-cuts trails, with further Gurobi reorderings, which saved 87 more letters. Adding his polish.sh, a set of local searches over where trails are opened and joined, as a third step of the alternation, with its loopscan step allowed far more rounds than its default, saved 588 more letters.