C111123313331323113313331333133313331323133113313331333133313311212332121   >>    C11112331333132311331333133313331333132313311331333133313331331121233212   <<    C111123313331323113313331333133313331323133113313331333133313311212332123   >>      C111123313331323113313331333133313331323133113313331333133313311212332122   >>