I have working code

```
BEGIN { FS=";"; }   # field separator
{ 
    if (match($2, /[0-9]+/)) {           # matching `ID` value
        m=substr($2, RSTART, RLENGTH);
        a[m]++;                          # accumulating number of lines for each `ID`
        print > m"_count.txt";    # writing lines pertaining to certain `ID` into respective file
    } 
}
END {
    for(i in a) { 
        print "mv "i"_count.txt "i"_"a[i]".txt"  # renaming files with actual counts
    }
} 

```

Now i need to change it to do something like this.
So i have three arrays of IDs and each array means separate folders to save result.

```
BEGIN { FS=";"; }   # field separator
{
    array1=(125 258 698 874)
    array2=(956 887 4455 22)
    array3=(111 444 558 966 332)
    if ($1 == $2) {varR=$3} else {varR=$2}
    if (match(varR, /[0-9]+/)) {           # matching `ID` value
        if ( varR in array1 ) {
            FolderName = "folder1/"
            m1=substr(varR, RSTART, RLENGTH);
            a1[m1]++;                          # accumulating number of lines for each `ID`
            print > (FolderName m1)"_count.txt";    # writing lines pertaining to certain `ID` into respective file
        }
        if ( varR in array2 ) {
            FolderName = "folder2/"
            m2=substr(varR, RSTART, RLENGTH);
            a2[m2]++;                          # accumulating number of lines for each `ID`
            print > (FolderName m2)"_count.txt";    # writing lines pertaining to certain `ID` into respective file
        }
        if ( varR in array3 ) {
            FolderName = "folder3/"
            m3=substr(varR, RSTART, RLENGTH);
            a3[m3]++;                          # accumulating number of lines for each `ID`
            print > (FolderName m3)"_count.txt";    # writing lines pertaining to certain `ID` into respective file
        }
    } 
}
END {
    for(i in a1) { 
        print "mv "i"_count.txt "i"_"a1[i]".txt"  # renaming files with actual counts
    }
    for(i in a2) { 
        print "mv "i"_count.txt "i"_"a2[i]".txt"  # renaming files with actual counts
    }
    for(i in a3) { 
        print "mv "i"_count.txt "i"_"a3[i]".txt"  # renaming files with actual counts
    }
} 

```

As i need to save matching ID to txt files and put in needed folder
What if i have 100 arrays? I need to duplicate code for each one?