Is each word in its own paragraph or is there spaces between words? Assuming they are paragraphs, a search and replace would do it. You can record this as a macro if you wanted to.

Find: [a-zA-Z]{1,}-[a-zA-Z]{1,}^13
Replace: Nothing <- don't put anything in the replace box
Wildcards turned on

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Andrew Lockton
Chrysalis Design, Melbourne Australia