#!/usr/bin/awk -f
# reports which file is being read
BEGIN {
f="";
val="";
}
{ 
if (f != FILENAME) {
  print "reading", FILENAME;
  do {
    if (FNR >= 43) data[$1] = data[$1] OFS $2;
    f=FILENAME;
  } while (getline != 0); 
}
}
END{for(val in data) print data[val];}