I am trying to convey a meaning using old Japanese numeral wordplay. The idea is to say something similar to the word for Sweets or Confection with up to 3 numbers. My understanding is that this word is Okashi. I have gotten as far as to get 0_4. I seem unable to complete this word however, as I am missing a number that represents the "Ka" sound. How should I best convey the idea of a cake, candy, or other sweet confection through this method?
This is apparently a code used on old Japanese pagers. For example: 831 converts to Veggie, 049 = Swim, 187 = Spark