This is something that I would never attempt but, since you asked:
Copy the graphics and paste into Word (it will only paste into PowerPoint as a group that you cannot explode...at least, in my brief experiment). Once copied into Word, double-click on the graphics (they should expand into a smaller window) and edit away. Be mindful that this process will be very tedious and you may not get the results that you desire. Afterall, a word processing program is not designed for graphic editing.
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