2 단 　 3 단 　 4 단 　 5 단 　　　　　　　　　　 2 * 1 = 2 　 3 * 1 = 3 　 4 * 1 = 4 　 5 * 1 = 52 * 2 = 4 　 3 * 2 = 6 　 4 * 2 = 8 　 5 * 2 = 102 * 3 = 6 　 3 * 3 = 9 　 4 * 3 = 12 　 5 * 3 = 152 * 4 = 8 　 3 * 4 = 12 　 4 * 4 = 16 　 5 * 4 = 202 * 5 = 10 　 3 * 5 = 15 　 4 * 5 = 20 　 5 * 5 = 252 * 6 = 12 　 3 * 6 = 18 　 4 * 6 = 24 　 5 * 6 = 302 * 7 = 14 　 3 * 7 = 21 　 4 * 7 = 28 　 5 * 7 = 352 * 8 = 16 　 3 * 8 = 24 　 4 * 8 = 32 　 5 * 8 = 402 * 9 = 18 　 3 * 9 = 27 　 4 * 9 = 36 　 5 * 9 = 45 　　　　　　　 6 단 　 7 단 　 8 단 　 9 단 　　　　　　　　　　 6 * 1 = 6 　 7 * 1 = 7 　 8 * 1 = 8 　 9 * 1 = 96 * 2 = 12 　 7 * 2 = 14 　 8 * 2 = 16 　 9 * 2 = 186 * 3 = 18 　 7 * 3 = 21 　 8 * 3 = 24 　 9 * 3 = 276 * 4 = 24 　 7 * 4 = 28 　 8 * 4 = 32 　 9 * 4 = 366 * 5 = 30 　 7 * 5 = 35 　 8 * 5 = 40 　 9 * 5 = 456 * 6 = 36 　 7 * 6 = 42 　 8 * 6 = 48 　 9 * 6 = 546 * 7 = 42 　 7 * 7 = 49 　 8 * 7 = 56 　 9 * 7 = 636 * 8 = 48 　 7 * 8 = 56 　 8 * 8 = 64 　 9 * 8 = 726 * 9 = 54 　 7 * 9 = 63 　 8 * 9 = 72 　 9 * 9 = 81