Below is the syntax specification for the txt file:

NumberOfColumns
NumberOfRows
(RowIndex ColumnIndex [F|P|T])+

The RowIndex and ColumnIndex are 1 based, and not Zero-based.

Consider the following state:

| F  P     |
| F    T   |
|          |
|T       P |
|  FFF     |

It would be specified as follows:

10
5
1 2 F
1 5 P
2 2 F
2 7 T
4 1 T
4 9 P
5 3 F
5 4 F
5 5 F