display string array cells as bullet points in text

I have a string array as follows:

words = ["1a";...
    "2a";...
    "2a";...
    "4a";...
    "5b";...
    "1a"]

I am using the mlreportgen.ppt in matlab to create a powerpoint. On one of the slides, there is an existing textbox. I would like to replace the textbox with bulletpoints of the array words. I tried the following but the output is a table and not bullet points or even just text.

contents = find(slides, 'textbox') % finds the textbox of which the contents will be replaced
newtext = words;
replace(contents(1),newtext)

I also only want to list repeating cells once. What I want the programm to put into the textbox is as follows basically:

• 1a
• 2a
• 4a
• 5b

any help appreciated!!