Undecimal meantone node

[|-4 4 -1 0 0>, |-13 10 0 -1 0>, |-25 18 0 0 -1>]

<<1 4 10 18 15 4 13 25 20 12 28 20 16 5 -15|| meantone |-20 15 0 0 0 -1> 18.04837

<<1 4 10 18 -16 4 13 25 -29 12 28 -52 16 -82 -122|| grosstone |-29 16 0 0 0 1> 25.89916

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