B3311331313231311331322331333132233131133132233133313231333132311311321   >>    B331133131323131133132233133313223313113313223313331323133313231131132   <<    B3311331313231311331322331333132233131133132233133313231333132311311323   >>      B3311331313231311331322331333132233131133132233133313231333132311311322   >>