$s = 'RAGGTS';
$s =~ s[R][{A,G}]g; 
$s =~ s[S][{C,G}]g; 
print while glob $s;
AAGGTC
AAGGTG
GAGGTC
GAGGTG

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In reply to Re: How to expand a string by BrowserUk
in thread How to expand a string by Anonymous Monk

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