B3311331313231311331322331333132233131133132233133313231333132313331322221   >>    B331133131323131133132233133313223313113313223313331323133313231333132222   <<    B3311331313231311331322331333132233131133132233133313231333132313331322223   >>      B3311331313231311331322331333132233131133132233133313231333132313331322222   >>