Here you go.

@s = qw(ABABC BABCA ABCBA);
sub l{length@_[0]};for$i(0..$#s){$l=l$s[$i];for$s(0..$l-1){for$o(1..$l
+-$s)
{$t=substr$s[$i],$s,$o;if(!$i||exists$c{$t}){$c{$t}|=1<<$i}}}};print j
+oin$/,
'Common subsequences:',@s,'-'x30,sort{l($b)<=>l$a}grep{$c{$_}==(1<<@s)
+-1}keys%c;

[download]
Common subsequences:
ABABC
BABCA
ABCBA
------------------------------
ABC
BC
BA
AB
C
A
B

In reply to Re: How can I get the longest and all other common substrings from a set of strings? by thundergnat
in thread How can I get the longest and all other common substrings from a set of strings? by supriyoch_2008

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