B3311331313231311331322331333132313331322331323133313331311331313122311   >>    B331133131323131133132233133313231333132233132313331333131133131312231   <<    B3311331313231311331322331333132313331322331323133313331311331313122313   >>      B3311331313231311331322331333132313331322331323133313331311331313122312   >>