math
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5 defs 25 6 defs 23 6 defs 29 3 defs 20 3 defs 23 6 defs 31 5 defs 21 3 defs 19 5 defs 23 6 defs 23 3 defs 21 6 defs 19 6 defs 24 6 defs 22 6 defs 24 3 defs 21 3 defs 24 7 defs 23 3 defs 21 6 defs 22 3 defs 22 5 defs 33 6 defs 20 3 defs 23 6 defs 22 6 defs 24 6 defs 22 3 defs 27 3 defs 17 6 defs 24