Heh. I took things too literally, as is my tendency on occasion. I read "random number of letters" and assumed without further thought that zero is a perfectly cromulent random number. If you want a nonzero random number, then replace rand 8 with (1+rand 7). Vary the number 7 according to taste.

$;=sub{$/};@;=map{my($a,$b)=($_,$;);$;=sub{$a.$b->()}}
split//,".rekcah lreP rehtona tsuJ";$\=$ ;->();print$/
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