B3311331313231311331322331333132233131133132233133313231333132233123231   >>    B331133131323131133132233133313223313113313223313331323133313223312323   <<    B3311331313231311331322331333132233131133132233133313231333132233123233   >>      B3311331313231311331322331333132233131133132233133313231333132233123232   >>