C11112331312111112111133133313331333132313133313113313231322111133112121   >>    C1111233131211111211113313331333133313231313331311331323132211113311212   <<    C11112331312111112111133133313331333132313133313113313231322111133112123   >>      C11112331312111112111133133313331333132313133313113313231322111133112122   >>