science
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3 defs 22 6 defs 22 5 defs 18 6 defs 28 6 defs 22 2 defs 21 11 defs 43 5 defs 23 5 defs 21 5 defs 20 6 defs 28 3 defs 29 6 defs 24 4 defs 33 7 defs 23 6 defs 19 3 defs 17 6 defs 15 5 defs 27 6 defs 18 6 defs 24 7 defs 18 3 defs 20 5 defs 21 6 defs 21 3 defs 17 7 defs 22 6 defs 18 7 defs 18 4 defs 19