code: function decodeFor(n) {
    return (
        n === 1 ? decode
      : n === 2 ? decode2
      : n === 3 ? decode3
      : n === 4 ? decode4
      : decode5
    )
  }
docs: Get a decode function to decode n chars
  
  @name decodeFor
  
  @param {Number} n the number of chars to decode
  @returns {function} the matching decoding function