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@a = 'a'..'z';;
@b = sub{ map pop, @_ }->( @a );;

print @b;;
z y x w v u t s r q p o n m l k j i h g f e d c b a

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@c = map pop @a, @a;;

print @c;;
z y x w v u t s r q p o n m l k j i h g f e d c b a