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  1. or download this
    $c='[\d\-\.pqxy]'; #regexp
(@chroms)=($text=~/\s$c*?\s/sig); #extract all
for ($i=0; $i<@chroms; $i++) {
splice(@chroms, $i, 1) if (!($chroms[$i]=~/[pqxy]/i));
} #eliminate pure numbers
print "$_\n" foreach (@chroms);
  2. or download this
    Xq27-q28
q11q12
22q121
...
52
15
19q12q1311