Question 10
AI reconstruction: discuss the sequence rather than choosing a single answer. Use only these two conditions: top markers repeat triangle, circle, cross; center marks alternate filled and hollow. List every candidate that satisfies both, and explain why the other corner symbols do not justify a unique continuation.
Sequence:

A:

B:

C:

D:

E:

Sequence:

A:

B:

C:

D:

E:
