for s in `tr a-z A-Z`;{ n=`tr -d N<<<${s:2:${#s}-4}` eval grep\ {^L,^.I,U.$,X$}'<<<$s>_||n+=_;' echo $[${#s}>4?${#n}:-1] }
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
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