POEM BY NARI
 
 








 

2  1  4  3   4  1  3  2
3  4  1  2   3  2  4  1
1  2  3  4   2  3  1  4
4  3  2  1   1  4  2  3

3  2  4  1   1  2  3  4
4  1  3  2   4  3  2  1
1  4  2  3   2  1  4  3
2  3  1  4   3  4  1  2

rotation calculation

b  a  d  c   a  b  d  c
c  d  a  b   d  c  a  b
a  b  c  d   c  d  b  a
d  c  b  a   b  a  c  d

b  a  c  d   c  d  a  b
c  d  b  a   b  a  d  c

d  c  a  b   d  c  b  a
a  b  d  c   a  b  c  d