science
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6 defs 26 7 defs 23 8 defs 22 7 defs 28 6 defs 25 3 defs 29 5 defs 26 7 defs 44 5 defs 21 6 defs 28 3 defs 19 6 defs 28 6 defs 30 6 defs 23 6 defs 34 6 defs 39 6 defs 22 5 defs 32 5 defs 23 6 defs 18 7 defs 22 5 defs 28 5 defs 25 6 defs 27 7 defs 27 6 defs 24 7 defs 28 6 defs 23 5 defs 22 6 defs 18