B3311331313231311331322331333132313232313231333133313231323221121   >>    B331133131323131133132233133313231323231323133313331323132322112   <<    B3311331313231311331322331333132313232313231333133313231323221123   >>      B3311331313231311331322331333132313232313231333133313231323221122   >>