B3311331313231311331322331333132313331322331323133313233211313231311   >>    B331133131323131133132233133313231333132233132313331323321131323131   <<    B3311331313231311331322331333132313331322331323133313233211313231313   >>      B3311331313231311331322331333132313331322331323133313233211313231312   >>