B3311331313231311331322331333132313331322331323133313331313132313231322123231   >>    B331133131323131133132233133313231333132233132313331333131313231323132212323   <<    B3311331313231311331322331333132313331322331323133313331313132313231322123233   >>      B3311331313231311331322331333132313331322331323133313331313132313231322123232   >>