B3311331313231311331322331333132313331322331323133313331323223123231121   >>    B331133131323131133132233133313231333132233132313331333132322312323112   <<    B3311331313231311331322331333132313331322331323133313331323223123231123   >>      B3311331313231311331322331333132313331322331323133313331323223123231122   >>