B3311331313231311331322331333132313132313331323223313231333132311213121   >>    B331133131323131133132233133313231313231333132322331323133313231121312   <<    B3311331313231311331322331333132313132313331323223313231333132311213123   >>      B3311331313231311331322331333132313132313331323223313231333132311213122   >>