C1111233131211111211113313331333133313331333133313331333133313121333131221   >>    C111123313121111121111331333133313331333133313331333133313331312133313122   <<    C1111233131211111211113313331333133313331333133313331333133313121333131223   >>      C1111233131211111211113313331333133313331333133313331333133313121333131222   >>