math
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6 defs 19 5 defs 28 6 defs 27 7 defs 19 5 defs 22 5 defs 19 6 defs 24 3 defs 20 6 defs 24 6 defs 23 3 defs 32 3 defs 21 5 defs 19 5 defs 27 6 defs 33 6 defs 26 6 defs 22 6 defs 32 5 defs 23 2 defs 37 6 defs 24 3 defs 20 2 defs 26 4 defs 21 7 defs 20 3 defs 23 7 defs 22 6 defs 16 7 defs 33 6 defs 21