B3311331313231311331322331333132313331322331323133313331323132233132313232221   >>    B331133131323131133132233133313231333132233132313331333132313223313231323222   <<    B3311331313231311331322331333132313331322331323133313331323132233132313232223   >>      B3311331313231311331322331333132313331322331323133313331323132233132313232222   >>