change PREVIOUS POST text in wordpress.com site

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  guylis · Member · Dec 2, 2016 at 9:12 am

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  Hi, I’ve added some posts to my site and there’s a text at the bottom ‘PREVIOUS POST’ I cannot find where I can change it.
  Any ideas if this is possible?
  Thanks

  The blog I need help with is: (visible only to logged in users)