B3311331313231311331322331333132313132313331323223313233213231121   >>    B331133131323131133132233133313231313231333132322331323321323112   <<    B3311331313231311331322331333132313132313331323223313233213231123   >>      B3311331313231311331322331333132313132313331323223313233213231122   >>