I've been playing some more with the same time same direction patterns Yuta was showing off at Firedrums and trying to apply the concept to stacking patterns. While technically none of these are true stacks, they share some similarities in concept in how the hands change orientation in relation to each other. Going a bit down the rabbit-hole, here is a pattern that essentially amounts to performing a stack in all four directions and alternating between an antispin and extension transition to do it.

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techblog93.mp4