remove words and get result in other cell in excel

hi i want to remove some words from my data and get result in next cell for ex :

Cell A                                     | Cell B             
============================================================
this is beautiful good fine a        | this is a         
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beautiful a fine new this            |a this                
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this number beautiful best  cool  |  this number cool 
-------------------------------------------------------------

any formula to remove these word and get result like in cell b in above.

thanks glenn its work