Hi, I've written the following code to manipulate the first 40 lines of a data file into my desired order:

#!/bin/awk -f
{ if (NR<=(4)){
a[NR]=a[NR]$0" "}
else { if ((NR >= (5)) && (NR <= (13))) {
b[NR%3]=b[NR%3]$0" " }
else {if ((NR >= (14)) && (NR <= (25))){
c[NR%3]=c[NR%3]$0" "}
else{if ((NR>=(26)) && (NR<=(40))){
d[NR%3]=d[NR%3]$0" "}
}}}}
END {{for (i in a)
{print a[i]} }
{for (i in b)
{ print b[i]} }
{for (i in c)
{print c[i]} }
{for (i in d)
{print d[i]} }}

However, I want to apply this sorting to every set of 40 lines in the data file, where the data files are 10000+ lines. I tried enclosing the entire code in a for loop but this didn't work as the a, b, c and d arrays in each block of 40 lines would have to change as well.

Can arrays be given numerical names so they could be incremented with each execution of the for loop?

Many thanks