Folder /file Rename using 1st few letters from each word of folder name

I want to rename my files by ending their name with some part of the folder name such as first 3 or 4 letters from each word of the folder name, as
File name : XXXX.pdf Folder name : Abc Xyz Pqr
New : XXXX-Ab.Xy.Pq.pdf or just XXXX-Ab Xy Pq.pdf
Like wise .
How do I do that

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