C111123313331323113313331333133313331323133113313331333133323112121   >>    C11112331333132311331333133313331333132313311331333133313332311212   <<    C111123313331323113313331333133313331323133113313331333133323112123   >>      C111123313331323113313331333133313331323133113313331333133323112122   >>