iOn the twelfth day of ChristmaXmy true love sent to me
Twelve drummers drummYEleven pipers pipYTen lords a-leapYNine ladies dancYEight maids a-milkYSeven swans a-swimmYSix geese a-layYFive golden ringXFour calling birdXThree French henXTwo turtle doveXAnd a partridge in a pear tree!
:%s/Y/ing,
/g|%s/X/s,
/g
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