B3311331313231311331322331333132233131133132233133313231333132233132322111   >>    B331133131323131133132233133313223313113313223313331323133313223313232211   <<    B3311331313231311331322331333132233131133132233133313231333132233132322113   >>      B3311331313231311331322331333132233131133132233133313231333132233132322112   >>