The newick format is a string based representation of a phylogenetic tree
with emphasis on relationships between leaves of the tree. For example for
the tree

      6
     / \
    /   \
   4     5
  / \   / \
 0   1 2   3

the newick representation is

( (0,1) , (2,3) )

where

(0,1) denotes the tree

 /\
0  1

and (2,3) represents the tree

 /\
2  3

and ( (0,1) , (2,3) ) denotes the pairing of their roots.

Write the newick representation for the trees below.


(a)
      6
     / \
    5   \
   / \   \
  4   \   \
 / \   \   \
0   1   2   3


(b)
       8
      / \
     /   \
    7     \
   / \     \
  5   \     6
 / \   \   / \
0   1   2 3   4


Submit hardcopies in class on March 29th.