Actually for Shun [2][G]+[K] is the command for the sit-down stance. [2]+[G]+[P]+[K] will do a drunken walk.
Drunken stepping is most probably Shun's Drunken Walks ([4][G][P][K],[1][G][P][K],etc). Shun's [1][G][P][K] or [7][G][P][K] is used alot by...
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