Datasets:
| | Col 1 | Col 2 | Col 3 | Col 4 | Col 5 | | |
| Row 1 | # | # | # | # | _ | | |
| Row 2 | # | _ | _ | # | # | | |
| Row 3 | # | # | _ | # | # | | |
| Row 4 | * | # | @ | _ | _ | | |
| Row 5 | # | _ | _ | _ | _ | | |
| | Col 1 | Col 2 | Col 3 | Col 4 | Col 5 | | |
| Row 1 | # | # | # | # | _ | | |
| Row 2 | # | _ | _ | # | # | | |
| Row 3 | # | # | _ | # | # | | |
| Row 4 | * | # | @ | _ | _ | | |
| Row 5 | # | _ | _ | _ | _ | | |