单词	even permutation
释义	even permutation noun : a permutation that is produced by the successive application of an even number of interchanges of pairs of elements Word History First Known Use 1881, in the meaning defined above
随便看	signalisation signalise signalised signalises signalising signality signalization signalizations signalize signalized signalizes signalizing signalled signaller signallers signallest signallier signalliest signalling signally signalman signalmen signalment signalments signals

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