Search for errors CFin, CFid in RAM. Can it be done in O(n)?

Question

RAM

Performing LR, I encountered some misunderstanding of the principle of searching for specific errors by march.
The wording of the task is as follows: "Algorithm: March A, find the positions of errors like SAF, CFid, CFin; for the last two, make a table indicating the victim, aggressor, characteristics by position and influence of the aggressor on the victim."
If there are no problems with SAF detection, then they arose with CFs:

1. Is it possible to determine the location of CFs and their nature in one pass of the test? (15n)
   
2. If a cell is on the SAF list, can it also be on the set of CFs? Does the set of CFs intersect or is completely included in the set of SAFs?