added bob (id 0)
added jack (id 1)
added gary (id 2)
added ty (id 3)
added bo (id 4)
added phil (id 5)
added art (id 6)
added gil (id 7)
added buck (id 8)
added ted (id 9)
found bob (id 0)
replaced (y) with bob (id 0)
found jack (id 1)
replaced (y) with jack (id 10)
found gary (id 2)
replaced (y) with gary (id 20)
found ty (id 3)
replaced (y) with ty (id 30)
found bo (id 4)
replaced (y) with bo (id 40)
found phil (id 5)
replaced (y) with phil (id 50)
found art (id 6)
replaced (y) with art (id 60)
found gil (id 7)
replaced (y) with gil (id 70)
found buck (id 8)
replaced (y) with buck (id 80)
found ted (id 9)
replaced (y) with ted (id 90)
traversing... 
bob (id 0)
jack (id 10)
gary (id 20)
ty (id 30)
bo (id 40)
phil (id 50)
art (id 60)
gil (id 70)
buck (id 80)
ted (id 90)