let a = [[]]; let b = [[], []]; let c = [[], [], []]; let d = [[], [0], []]; let e = [[], [0], [0]]; let f = [[], [0, 1], [0]]; let g = [[], [0, 1], [0, 1]]; let h = [[0]]; let i = [[0], []]; let j = [[0], [], []]; let k = [[0], [0], []]; let l = [[0], [0], [0]]; let m = [[0], [0, 1], [0]]; let n = [[0], [0, 1], [0, 1]]; let o = [[0, 1]]; let p = [[0, 1], []]; let q = [[0, 1], [], []]; let r = [[0, 1], [0], []]; let s = [[0, 1], [0], [0]]; let t = [[0, 1], [0, 1], [0]]; let u = [[0, 1], [0, 1], [0, 1]]; let v = [[], [1, 2, 3]]; let w = [[1], [1]]; let x = [[1, 2], [1, 2, 3]]; let y = [[1, 0], [1, 0]]; let z = [{}]; let a1 = [{}, {}]; let b1 = [{}, {}, {}]; let c1 = [{}, { a }]; let d1 = [{}, { a, b }]; let e1 = [{}, { a, b, c }]; let f1 = [{ a }]; let g1 = [{ a }, { a }]; let h1 = [{ a }, { a }, { a }]; let i1 = [{ a }, { a, b }]; let j1 = [{ a }, { a, b, c}]; let k1 = [{ a, b }]; let l1 = [{ a, b }, { a }]; let m1 = [{ a, b }, { a }, { a }]; let n1 = [{ a, b }, { a, b }]; let o1 = [{ a, b }, { a, b, c }];