B3311331313231311331322331333132313331322331323133313331323131313223121   >>    B331133131323131133132233133313231333132233132313331333132313131322312   <<    B3311331313231311331322331333132313331322331323133313331323131313223123   >>      B3311331313231311331322331333132313331322331323133313331323131313223122   >>