B3311331313231311331322331333132233131133132233133313231333132313331311332211   >>    B331133131323131133132233133313223313113313223313331323133313231333131133221   <<    B3311331313231311331322331333132233131133132233133313231333132313331311332213   >>      B3311331313231311331322331333132233131133132233133313231333132313331311332212   >>