题目描述
口袋中有红、黄、蓝、白、黑5种颜色的球各一个。每次从口袋中先后取出3个球，问得到3种不同颜色的球的可能取法，输出每种取法。
输入
无。
输出
每种取法（按红、黄、蓝、白、黑字典序）。
样例输入 Copy
样例输出 Copy
1 red yellow blue
2 red yellow white
3 red yellow black
4 red blue yellow
5 red blue white
6 red blue black
7 red white yellow
8 red white blue
9 red white black
10 red black yellow
11 red black blue
12 red black white
13 yellow red blue
14 yellow red white
15 yellow red black
16 yellow blue red
17 yellow blue white
18 yellow blue black
19 yellow white red
20 yellow white blue
21 yellow white black
22 yellow black red
23 yellow black blue
24 yellow black white
25 blue red yellow
26 blue red white
27 blue red black
28 blue yellow red
29 blue yellow white
30 blue yellow black
31 blue white red
32 blue white yellow
33 blue white black
34 blue black red
35 blue black yellow
36 blue black white
37 white red yellow
38 white red blue
39 white red black
40 white yellow red
41 white yellow blue
42 white yellow black
43 white blue red
44 white blue yellow
45 white blue black
46 white black red
47 white black yellow
48 white black blue
49 black red yellow
50 black red blue
51 black red white
52 black yellow red
53 black yellow blue
54 black yellow white
55 black blue red
56 black blue yellow
57 black blue white
58 black white red
59 black white yellow
60 black white blue