:5,8del | let l=split(@") | 1,4s/$/=remove(l,0)/

If there are no spaces at the starts or ends of the lines, you can use line.split()

the str type also has a method called "splitlines".

"FoornrnDouble WindowsrrDouble OS XnnDouble UnixrnWindowsrOS XnUnix".splitlines()

OR

re.split(r'[nr]+', line)

A British game-show called "Golden Balls" concludes each installment with a single-shot version of the Prisoner's Dilemma in which the two players' choices can result in a large cash prize being awarded to both of them, neither of them, or just one of them. The players are allowed to tell each other what they plan on doing, but they are also allowed to lie and try to trick the other player into making a choice that would leave the whole pot in the trickster's hands.

In this remarkable clip, a player named Nick runs an extraordinary end-game that has to be seen to be believed

this is the best split or steal i have seen.