User blog comment:Koteitan/Categorizing of the rule sets for all sub versions of bashicu matrix/@comment-11227630-20191119133850/@comment-30846880-20191120194124

The correct rule for the concestor method finding bad root is that the bad root is decided with only the concestor of the non-zero row in the cut column. In addition that, I notice no description for the case in which there is no consestor found in every column. In this case, just the rightmost column is cut and there is no bad root copy. I'll fix them all together.