B3311331313231311331322331333132333132311211331333132322331323132313221233131   >>    B331133131323131133132233133313233313231121133133313232233132313231322123313   <<    B3311331313231311331322331333132333132311211331333132322331323132313221233133   >>      B3311331313231311331322331333132333132311211331333132322331323132313221233132   >>