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That can't be done very easily with Inkscape. Although it certainly would be a cool thing to have -- it would take someone who knows coding to offer to add the functionality. (hint, if anyone with coding skills interested

) Anyway, to do it with Inkscape, you'd have to convert the text to path, and then edit nodes to fit the shape. It would be really tricky keeping the text in proper proportions. It could definitely be done, but not without a lot of patience and time and skill
If you do decide to try it, you'll want to be aware of Node Sculpting
http://tavmjong.free.fr/INKSCAPE/MANUAL ... -Sculpting. It will help to sort of stretch the letters, but you would still have to do a lot of tweaking of individual nodes.
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