C111123313121111121111331333133313331323221211113313113313331333133313132222121   >>    C11112331312111112111133133313331333132322121111331311331333133313331313222212   <<    C111123313121111121111331333133313331323221211113313113313331333133313132222123   >>      C111123313121111121111331333133313331323221211113313113313331333133313132222122   >>