> phh("hex", 5L, nrow = 9, ncol = 9)
/------------------\
| 3 4 5 1 2 3 4 5 1|
|1 2 3 4 5 1 2 3 4 |
| 5 1 2 3 4 5 1 2 3|
|3 4 5 1 2 3 4 5 1 |
| 2 3 4 5 1 2 3 4 5|
|5 1 2 3 4 5 1 2 3 |
| 4 5 1 2 3 4 5 1 2|
|2 3 4 5 1 2 3 4 5 |
| 1 2 3 4 5 1 2 3 4|
\------------------/

