Part 8 of Ralph Griswold's series on designing with L-Systems, dealing with non-terminal L-Systems that generate t-sequence expressions. It gives two examples of recursive rule sets (using pal, motif, hor, coll and ver operations), assigns values to the undefined variables, and shows the resulting sequences, partial drafts and weave drawdowns. It closes by listing four problems with the approach (hard to design, predict, assign values, and sequences become very long) and recommends trying many alternatives with computer programs.