Unix C Shell Scripting printf help

foreach finalList ($correctList $wrongList)
printf "%20s%sn" $finalList
end

Correct    Incorrect
Good1      Bad1
Good2      Bad2
Good3      Bad3

Good1     Bad1    Good2    Bad2

# Get the max index of the smallest list
set maxIndex = $#correctList
if ( $#wrongList < $#correctList ) then
  set maxIndex = $#wrongList
endif

set index = 1
while ($index <= $maxIndex)
  printf "%-20s %sn" "$correctList[$index]" "$wrongList[$index]"
  @ index++
end