B3311331313231311331322331333132313331322331323133313331313113313113122211   >>    B331133131323131133132233133313231333132233132313331333131311331311312221   <<    B3311331313231311331322331333132313331322331323133313331313113313113122213   >>      B3311331313231311331322331333132313331322331323133313331313113313113122212   >>