B3311331313231311331322331333132333132322131133133313231323132322112121   >>    B331133131323131133132233133313233313232213113313331323132313232211212   <<    B3311331313231311331322331333132333132322131133133313231323132322112123   >>      B3311331313231311331322331333132333132322131133133313231323132322112122   >>