B3311331313231311331322331333132233131133132233133313231333132212111113211311   >>    B331133131323131133132233133313223313113313223313331323133313221211111321131   <<    B3311331313231311331322331333132233131133132233133313231333132212111113211313   >>      B3311331313231311331322331333132233131133132233133313231333132212111113211312   >>