5  1

(((1,2),3),4,5);

(1,2,3,4,5);


(5, (4,(3,(1,2)))); /rooted trees

(((1:0.1, 2:0.2):0.8, 3:0.3):0.7, 4:0.4, 5:0.5);

(((Human:0.1, Chimpanzee:0.2):0.8, Gorilla:0.3):0.7, Orangutan:0.4, Gibbon:0.5);

(((1:0.04026, 2:0.05230):0.01641, 3:0.05855):0.04739, 4:0.09049, 5:0.12501);