C111123313121111121111331333133313331333131221111331333131133132212322221   >>    C11112331312111112111133133313331333133313122111133133313113313221232222   <<    C111123313121111121111331333133313331333131221111331333131133132212322223   >>      C111123313121111121111331333133313331333131221111331333131133132212322222   >>