B3311331313231311331322331333132313331322331323133313331333131312133121   >>    B331133131323131133132233133313231333132233132313331333133313131213312   <<    B3311331313231311331322331333132313331322331323133313331333131312133123   >>      B3311331313231311331322331333132313331322331323133313331333131312133122   >>