R_i

R (R_i)

S (R_i)

R (R_i) ∩ S (R_i)

Level

R₂

2, 6, 7, 8, 9, 10, 12, 13

2, 9, 10, 12, 13

2, 9, 10, 12, 13

R₆

6

2, 6, 9, 10, 12, 13

6

III

R₇

7

2, 7, 9, 10, 12, 13

7

III

R₈

8

2, 8, 9, 10, 12, 13

8

III

R₉

2, 6, 7, 8, 9, 10, 12, 13

2, 9, 10, 12, 13

2, 9, 10, 12, 13

R₁₀

2, 6, 7, 8, 9, 10, 12, 13

2, 9, 10, 12, 13

2, 9, 10, 12, 13

R₁₂

2, 6, 7, 8, 9, 10, 12, 13

2, 9, 10, 12, 13

2, 9, 10, 12, 13

R₁₃

2, 6, 7, 8, 9, 10, 12, 13

2, 9, 10, 12, 13

2, 9, 10, 12, 13