B3311331313231311331322331333132313233313231333131211113313331333132233211   >>    B331133131323131133132233133313231323331323133313121111331333133313223321   <<    B3311331313231311331322331333132313233313231333131211113313331333132233213   >>      B3311331313231311331322331333132313233313231333131211113313331333132233212   >>