My CPT is used to represent the different combinations of PLF and SLF. Each row corresponds to a specific combination of PLF and SLF. For example:
- The first row: PLF = 0, SLF = 0
- The second row: PLF = 1, SLF = 0
- The third row: PLF = 1, SLF = 1
- The fourth row: PLF = 2, SLF = 0
- The fifth row: PLF = 2, SLF = 1
- The sixth row: PLF = 2, SLF = 2 And so on.
However, certain combinations are impossible, such as when the SLF index exceeds the PLF index. For example, the combination PLF = 2, SLF = 3 is not allowed. Therefore, in the last row of the CPT, I marked all cases where the SLF index is greater than the PLF index as “impossible events” and set those values to 1, indicating they won’t happen.