math
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7 defs 49 7 defs 41 6 defs 33 7 defs 43 6 defs 34 5 defs 36 5 defs 38 4 defs 63 6 defs 49 3 defs 32 6 defs 35 6 defs 33 5 defs 38 4 defs 30 7 defs 35 4 defs 36 7 defs 33 5 defs 29 6 defs 29 5 defs 38 6 defs 33 6 defs 35 3 defs 36 6 defs 28 3 defs 31 7 defs 28 5 defs 43 5 defs 34 7 defs 34 5 defs 30