B3311331313231311331322331333132333132313112331333132333132322331323131211   >>    B331133131323131133132233133313233313231311233133313233313232233132313121   <<    B3311331313231311331322331333132333132313112331333132333132322331323131213   >>      B3311331313231311331322331333132333132313112331333132333132322331323131212   >>