Assuming alphanumeric words, you can use:
Search = ^([A-Za-z0-9]+)$
Replace = able:"1"
Or, if you just want to highlight the lines and use "Replace All" & "In Selection" (with the same replace):
Search = ^(.+)$
^
points to the start of the line.
$
points to the end of the line.
1
will be the source match within the parentheses.
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