B3311331313231311331322331333132313233313231333131123313331323232133121   >>    B331133131323131133132233133313231323331323133313112331333132323213312   <<    B3311331313231311331322331333132313233313231333131123313331323232133123   >>      B3311331313231311331322331333132313233313231333131123313331323232133122   >>