C1111233131211111211113313331333133313331333133313331333133313221111121   >>    C111123313121111121111331333133313331333133313331333133313331322111112   <<    C1111233131211111211113313331333133313331333133313331333133313221111123   >>      C1111233131211111211113313331333133313331333133313331333133313221111122   >>