Kimariji by blub

T=`cat /dev/stdin`;echo "$T"|while read R;do D=`echo "$T"|grep -v ^$R$`;for i in `seq 1 ${#R}`;do echo "$D"|grep -q ^${R:0:$i}||{ echo ${R:0:$i};break; };done;done

Note that non-ascii characters in the above source code will be escaped (such as \x9f).

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