is there anyway i can remove duplicate text entries with exceptions on the city/state and zipcode on microsoft word without ruining the template?

f.e http://imgur.com/BkAkFQO [1] (names and addresses are redacted for privacy reasons. highlighted the city, state and zipcode as an example of the duplicated address)

had to export this list from a medical software my company uses as a pdf file then i converted the pdf file to a word file, so no, this isnt as a microsoft word address label template but it has the correct margins. Theres 810 pages and most of the addresses are duplicates and i am going to cry if i have to manually delete the duplicate entries one by one. i have tried using excel but that just messed up the format of the text. changing the format isnt an option because i need to print these out using avery 5160 address label paper. pls help. thanks for looking!