C111123313331323113313331333133313331322331313331333112113313112121   >>    C11112331333132311331333133313331333132233131333133311211331311212   <<    C111123313331323113313331333133313331322331313331333112113313112123   >>      C111123313331323113313331333133313331322331313331333112113313112122   >>