In my view you can try to do following things which may solve the purpose
Follow the steps
A. Delete spaces line breakor paragraph break between text I should look like bring it in one line
xxxx yyyy zzzz aaaa bbbb
You can do with manually deleting and if list list is long then by find and replace
Open the Word document that you want to work on
.Press CTRL + H to bring up the Find and Replace box.
In the “Find what” box type ^l [this upward arrow character is called caret and is usually available on a number key and l is for line break)
In “Replace with” box type a ^p
B. Then press enter after each word
ie
After xxxx press enter this will create paragraph break
xxxx
yyyy zzzz aaaa bbbb
Then after yyyy press enter and so on
After xxxx press enter this will create paragraph break
xxxx
yyyy
zzzz aaaa bbbb
And make it look like
xxxx
yyyy
zzzz
aaaa
bbbb
C. Then try to copy paste in table
D. If still its repeating then use convert text to table see link with pictures how and where to
Convert text to a table or a table to text - Office Support