math
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6 defs 30 3 defs 22 5 defs 23 3 defs 21 3 defs 19 5 defs 21 3 defs 23 3 defs 19 3 defs 24 6 defs 24 3 defs 18 3 defs 17 3 defs 20 6 defs 19 3 defs 17 3 defs 21 3 defs 18 3 defs 22 3 defs 23 3 defs 21 5 defs 23 5 defs 19 5 defs 22 5 defs 19 6 defs 25 3 defs 25 6 defs 19 5 defs 28 6 defs 27 7 defs 19