C111123313331323113313331333133313331323133113313331333133313213233121   >>    C11112331333132311331333133313331333132313311331333133313331321323312   <<    C111123313331323113313331333133313331323133113313331333133313213233123   >>      C111123313331323113313331333133313331323133113313331333133313213233122   >>