for x=1 to 3
  if x=1 then
    print "1a"
  else
    if x=2 then
      print "2a"
    else
      print "3a"
    end if
  end if
next

for x=1 to 3
  if x=1 then
    print "1b"
  elseif x=2 then
    print "2b"
  elseif x=3 then print "3b"
next