intro:
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--------5--4-3-------5-7-8----------5-4-3--5--7-5-7-5----------|
-0-0-0--3--2-1-0-0-0-3-5-6--0-- 0-0-3-2-1--3--3-3-3-3----------|
|slide from 3,7to 5,3 then repaet 1 more time