function solve (params) {
  let dictionary = {}
  let wordDescriptionPairs = params[0].split(' | ')

  for (let pair of wordDescriptionPairs) {
    let tokens = pair.split(': ')
    let word = tokens[0]
    let description = tokens[1]

    if (!dictionary.hasOwnProperty(word)) {
      dictionary[word] = []
    }

    dictionary[word].push(description)
  }

  let words = params[1].split(' | ')

  for (let word of words) {
    if (dictionary.hasOwnProperty(word)) {
      console.log(word)

      let descriptions = dictionary[word].sort((a, b) => b.length - a.length)

      for (let description of descriptions) {
        console.log(` -${description}`)
      }
    }
  }

  let command = params[2]

  if (command === 'List') {
    let wordsToList = Object.keys(dictionary).sort()

    console.log(wordsToList.join(' '))
  }
}