B3311331313231311331322331333132313331322331323133313331331123231111333121   >>    B331133131323131133132233133313231333132233132313331333133112323111133312   <<    B3311331313231311331322331333132313331322331323133313331331123231111333123   >>      B3311331313231311331322331333132313331322331323133313331331123231111333122   >>