B3311331313231311331322331333132313231333133313311211113313331323223313311   >>    B331133131323131133132233133313231323133313331331121111331333132322331331   <<    B3311331313231311331322331333132313231333133313311211113313331323223313313   >>      B3311331313231311331322331333132313231333133313311211113313331323223313312   >>