B3311331313231311331322331333132313331322331323133313231323112331121231   >>    B331133131323131133132233133313231333132233132313331323132311233112123   <<    B3311331313231311331322331333132313331322331323133313231323112331121233   >>      B3311331313231311331322331333132313331322331323133313231323112331121232   >>