Given those examples, there might be a few ways to do this -- either try to match from the start of the string:

s/abc\w+\s+\w+(?:, *\w+)\s+//;  # match and remove unwanted initial co
+ntent
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or else just look for what you want to keep at the end:

s/.*\s(\w+\s+\w+)$/$1/;  # match desired end content and remove everyt
+hing before it
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And of course, if you know in advance how those last two tokens are spelled, you could even use rindex() and substr():

$_ = substr( $_, rindex( $_, 'yuio jklh' ));
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