Hi,
Try this with three category variables.
> A
[1] "Baby" "Kid" "Teenager" "Adult" "Mature"
> B
[1] "Male" "Female"
> C
[1] "PST" "MST" "CST" "EST"
> expand.grid(Age=A, Sex=B, Zone=C)
Age Sex Zone
1 Baby Male PST
2 Kid Male PST
3 Teenager Male PST
4 Adult Male PST
5 Mature Male PST
6 Baby Female PST
7 Kid Female PST
8 Teenager Female PST
9 Adult Female PST
10 Mature Female PST
11 Baby Male MST
12 Kid Male MST
13 Teenager Male MST
14 Adult Male MST
15 Mature Male MST
16 Baby Female MST
17 Kid Female MST
18 Teenager Female MST
19 Adult Female MST
20 Mature Female MST
21 Baby Male CST
22 Kid Male CST
23 Teenager Male CST
24 Adult Male CST
25 Mature Male CST
26 Baby Female CST
27 Kid Female CST
28 Teenager Female CST
29 Adult Female CST
30 Mature Female CST
31 Baby Male EST
32 Kid Male EST
33 Teenager Male EST
34 Adult Male EST
35 Mature Male EST
36 Baby Female EST
37 Kid Female EST
38 Teenager Female EST
39 Adult Female EST
40 Mature Female EST
--
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