B3311331313231311331322331333132313331322331323133313331313231313221121131   >>    B331133131323131133132233133313231333132233132313331333131323131322112113   <<    B3311331313231311331322331333132313331322331323133313331313231313221121133   >>      B3311331313231311331322331333132313331322331323133313331313231313221121132   >>