Background
"Oh God", Lara Croft exclaims, "it's one of these dumb riddles again!"
In Tomb Raider XIV, Lara is, as ever, gunning her way through ancient Egyptian pyramids, prehistoric caves and medival hallways. Now she is standing in front of some important Germanic looking doorway and has to solve a linguistic riddle to pass. As usual, the riddle is not very intellectually challenging.
This time, the riddle involves poems containing a "Schuttelreim". An example of a Schuttelreim is the following short poem:
Ein Kind halt seinen Schnabel nur,
wenn es hangt an der Nabelschnur.
The Problem
A Schuttelreim seems to be a typical German invention. The funny thing about this strange type of poetry is that if somebody gives you the first line and the beginning of the second one, you can complete the poem yourself. Well, even a computer can do that, and your task is to write a program which completes them automatically. This will help Lara concentrate on the "action" part of Tomb Raider and not on the "intellectual" part.