Tree
root = Node ( 12 ) NEW_LINE root . left = Node ( 13 ) NEW_LINE root . right = Node ( 12 ) NEW_LINE root . right . left = Node ( 14 ) NEW_LINE root . right . right = Node ( 16 ) NEW_LINE root . right . left . left = Node ( 21 ) NEW_LINE root . right . left . right = Node ( 22 ) NEW_LINE root . right . right . left = Node ( 22 ) NEW_LINE root . right . right . right = Node ( 24 ) NEW_LINE root . right . right . right . left = Node ( 8 ) NEW_LINE