> phh("hex", NULL, nrow = 7, ncol = 9)
/------------------\
| 1 2 2 1 2 2 1 2 2|
|2 2 1 2 2 1 2 2 1 |
| 1 2 2 1 2 2 1 2 2|
|2 2 1 2 2 1 2 2 1 |
| 1 2 2 1 2 2 1 2 2|
|2 2 1 2 2 1 2 2 1 |
| 1 2 2 1 2 2 1 2 2|
\------------------/

