B3311331313231311331322331333132233131133132233133313231333132321122311   >>    B331133131323131133132233133313223313113313223313331323133313232112231   <<    B3311331313231311331322331333132233131133132233133313231333132321122313   >>      B3311331313231311331322331333132233131133132233133313231333132321122312   >>