Puzzle 1: Message in a Bottle

Ok great! Now all I have to do is read the rows of the table from left to right, top to bottom, and I'll have succeeded in decoding this message!
(Don't worry about the spaces between the words at this point...)





C L U E
"1st" "3rd" "4th" "2nd"
MUKG
EINE
XTLO
OKFO
RNOR
MORD
ERPI
CKLE
PIE.