"%d+" "d" =
read d ↔ O "l" = O "k" = O "j" = [
read d ↔ O l - z = O k - y = O j - x = [
read d ↔ O l - Z = O k - Y = O j - X = [
read d ↔ O l - x Y * X y * - * \ O k - z X * Z x * - * \ O j - y Z * Y z * - * \ [ + + 6 //