Answer:
A*+(B+c|3)
This seems like being a regular expression. A* means A will occur either 0 times or 1, 2 or any number of times. + means concatenation. and | means Or, which means either c or 3. Hence, resultant strings can be like
ABc
AB3
AABc
AAABc
AAAAB3
and so on
Step-by-step explanation:
This is a regular expression. And it is using * which means a character can be used 0 times or any number of times. It also used + which concatenates the two regex expressions, and | is used for Or, which means c or 3. And some of the examples of the strings generated are being given in the Answer section.