C111112111133131121133133313331333133313231333132232321323131221   >>    C11111211113313112113313331333133313331323133313223232132313122   <<    C111112111133131121133133313331333133313231333132232321323131223   >>      C111112111133131121133133313331333133313231333132232321323131222   >>