B3311331313231311331322331333132313233313231333131211113313232212213221   >>    B331133131323131133132233133313231323331323133313121111331323221221322   <<    B3311331313231311331322331333132313233313231333131211113313232212213223   >>      B3311331313231311331322331333132313233313231333131211113313232212213222   >>