medium Set 12 Table Grid
10+5=7=8=12+
7+8=1=13=9=2-7=2-4
11+912x3
2=22+513+1-
3-913+3=11+67=4=5=58=
7=11+3=8=
8=818+4=1=12+3=12x
4=8=2=6=5=59=7
4+3-412+54x2=12+
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