C3132121111133313233121111331333133313331322331333133313231131211221123231211   >>    C313212111113331323312111133133313331333132233133313331323113121122112323121   <<    C3132121111133313233121111331333133313331322331333133313231131211221123231213   >>      C3132121111133313233121111331333133313331322331333133313231131211221123231212   >>