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x=""
for((i=1;i<=5;i++))
do
x="$x $i"
echo $x
done
1
1 2
1 2 3
1 2 3 4
1 2 3 4 5
and
for((i=1;i<=5;i++))
do
for ((j=1;j<=$i;j++))
do
echo -n "$i "
done
echo ""
done

Since your recent post's input file is different from the original one you get like that..You could try the below, formatted according to the post#5's input file
sed -n '/revision...

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No flames,...