finding all combinations of musical things using Ramda

allCombinations.js

const chars = [
  "A",
  "B",
  "C",
  "D",
  "E",
  "F",
  "G",
  "H",
  "I",
  "J",
  "K",
  "L",
  "M",
  "N",
  "O",
  "P",
  "Q",
  "R",
  "S",
  "T",
  "U",
  "V",
  "W",
  "X",
  "Y",
  "Z",
  "a",
  "b",
  "c",
  "d",
  "e",
  "f",
  "g",
  "h",
  "i",
  "j",
  "k",
  "l",
  "m",
  "n",
  "o",
  "p",
  "q",
  "r",
  "s",
  "t",
  "u",
  "v",
  "w",
  "x",
  "y",
  "z",
];

//const notes = [ '', 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 ]

const chords = [ 'I', 'ii', 'iii', 'IV', 'V', 'vi', 'vii+']

//const combine2 = (a, b) => `${a} ${b}`;
//const combine3 = (a, b, c) => `${a} ${b} ${c}`;
const combine4 = (a, b, c, d) => `${a} ${b} ${c} ${d}`;

const cards = pipe(
  lift(combine4),
  map(trim),
  uniq,
  //length
)(...repeat(chords, 4))

cards