Delete duplicate consecutive occurring words/phrases from paragraph containing case sensitive words

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Suppose I have a string that looks like

s = "this is a random random this is a random Sentence sentence where phrases and words words repeat. This is the the second sentence sentence of the Same same paragraph"

I want its output to be

this is a random sentence where phrases and words repeat. This is the second sentence of the same paragraph"

This is something that I have tried, it handles the repeated words and phrases but does not take care of case sensitive duplicate words like Sentence sentence and Same same

s = "this is a random random this is a random Sentence sentence where phrases and words words repeat. This is the the second sentence sentence of the Same same paragraph"

def postprocess(s):
    while re.search(r'\b(.+)(\s+\1\b)+', s):
        s = re.sub(r'\b(.+)(\s+\1\b)+', r'\1', s)
    return s

postprocess(s)

the output it returns is this is a random this is a random Sentence sentence where phrases and words repeat. This is the second sentence of the Same same paragraph can anyone help me here?

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