C11111211113313112113313331333131133133313222313331333131211331322331   >>    C1111121111331311211331333133313113313331322231333133313121133132233   <<    C11111211113313112113313331333131133133313222313331333131211331322333   >>      C11111211113313112113313331333131133133313222313331333131211331322332   >>