B3311331313231311331322331333132313331323131323223313231333132333121   >>    B331133131323131133132233133313231333132313132322331323133313233312   <<    B3311331313231311331322331333132313331323131323223313231333132333123   >>      B3311331313231311331322331333132313331323131323223313231333132333122   >>