input = gets
#input = "abcdefghijklmnopqrstuvwxyz"
val =   "abcdefghijklmnopqrstuvwxyz".split("")
a = input.split("")
i = 0
val.each {|v|
  if (v != a[i]) then
    puts v + "to" + a[i]
  end
  i = i + 1
}