math
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6 defs 16 3 defs 14 6 defs 17 3 defs 19 3 defs 16 3 defs 18 5 defs 18 6 defs 23 5 defs 17 3 defs 17 6 defs 18 6 defs 19 22 4 defs 16 4 defs 19 6 defs 14 6 defs 18 6 defs 24 6 defs 14 5 defs 21 5 defs 16 5 defs 18 3 defs 19 5 defs 17 6 defs 17 6 defs 20 6 defs 21 4 defs 19 3 defs 16 6 defs 18