B3311331313231311331322331333132233131133132233133313231333132321123221211   >>    B331133131323131133132233133313223313113313223313331323133313232112322121   <<    B3311331313231311331322331333132233131133132233133313231333132321123221213   >>      B3311331313231311331322331333132233131133132233133313231333132321123221212   >>