C1111233131211111211113313331333133313331312211111133133313331322131221323311   >>    C111123313121111121111331333133313331333131221111113313331333132213122132331   <<    C1111233131211111211113313331333133313331312211111133133313331322131221323313   >>      C1111233131211111211113313331333133313331312211111133133313331322131221323312   >>