B3311331313231311331322331333132313331322331323133313331331123231133131211211   >>    B331133131323131133132233133313231333132233132313331333133112323113313121121   <<    B3311331313231311331322331333132313331322331323133313331331123231133131211213   >>      B3311331313231311331322331333132313331322331323133313331331123231133131211212   >>