math
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5 defs 23 7 defs 22 3 defs 19 7 defs 24 5 defs 24 5 defs 27 3 defs 28 5 defs 28 5 defs 20 5 defs 22 7 defs 20 3 defs 19 5 defs 19 6 defs 16 6 defs 23 5 defs 18 5 defs 19 5 defs 29 2 defs 21 6 defs 20 3 defs 23 3 defs 17 5 defs 24 3 defs 21 5 defs 21 3 defs 18 5 defs 25 5 defs 21 6 defs 28 5 defs 27