C111112111133131121133133313331333131333132322331333132313311232121   >>    C11111211113313112113313331333133313133313232233133313231331123212   <<    C111112111133131121133133313331333131333132322331333132313311232123   >>      C111112111133131121133133313331333131333132322331333132313311232122   >>