B3311331313231311331322331333132233131133132233133313231333132333331211   >>    B331133131323131133132233133313223313113313223313331323133313233333121   <<    B3311331313231311331322331333132233131133132233133313231333132333331213   >>      B3311331313231311331322331333132233131133132233133313231333132333331212   >>