B3311331313231311331322331333132333131333132233133313232233132313331323232221   >>    B331133131323131133132233133313233313133313223313331323223313231333132323222   <<    B3311331313231311331322331333132333131333132233133313232233132313331323232223   >>      B3311331313231311331322331333132333131333132233133313232233132313331323232222   >>