C111123313331323113313331333133313331323132311331323131121133112121   >>    C11112331333132311331333133313331333132313231133132313112113311212   <<    C111123313331323113313331333133313331323132311331323131121133112123   >>      C111123313331323113313331333133313331323132311331323131121133112122   >>