1: SCP-6789 and SCP-2125

2: SCP-096 and SCP-106

3: SCP-035 and SCP-049

4: SCP-1048 and SCP-22945

5: SCP-682 and SCP-079

6: Dr. Clef and Dr. Kondraki

7: SCP-053 and SCP-040

8: SCP-999 and SCP-XXX

9: SCP-939 or SCP-173 and SCP-513 or SCP-173-j