Z9 x Z7 isomorphic to Z63 

Z9 x Z7 isomorphic to Z63
  0 1 2 3 4 5 6 7 8
0 1 29 57 22 50 15 43 8 36
1 37 2 30 58 23 51 16 44 9
2 10 38 3 31 59 24 52 17 45
3 46 11 39 4 32 60 25 53 18
4 19 47 12 40 5 33 61 26 54
5 55 20 48 13 41 6 34 62 27
6 28 56 21 49 14 42 7 35 63
(5,3) -> 60

Reference: I. Niven, H. S. Zuckerman and H.L. Montgomery, An Introduction to the Theory of Numbers, p. 68.