B3311331313231311331322331333132333132311211331333132322331322132313231211   >>    B331133131323131133132233133313233313231121133133313232233132213231323121   <<    B3311331313231311331322331333132333132311211331333132322331322132313231213   >>      B3311331313231311331322331333132333132311211331333132322331322132313231212   >>