If you have a look at some of the ones that have been written (and you can open them to see how they are set up without actually playing them), you will see that different authors have used different techniques. Some have been very specific - "can you find the word that completes each line", some have been more generic - "find the match for each person". They all work.
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(Editor in Humanities, Religion, Literature and For Children)
That's all, folks!