B3311331313231311331322331333132333132313112331333132333132322331322331211   >>    B331133131323131133132233133313233313231311233133313233313232233132233121   <<    B3311331313231311331322331333132333132313112331333132333132322331322331213   >>      B3311331313231311331322331333132333132313112331333132333132322331322331212   >>