E

This corner configuration occurs in 4 of the 27 possible cases (14.8%). There are 8 distinct positions.

Simple sequences
[15.6 average]

1/12
8%

1 + Sune + Sune + 1 (->C1)

1/12
8%

Triple Sune

1/12
8%

AntiSune + Sune

1/12
8%

Sune + AntiSune

2/12
17%

Sune + Rune

2/12
17%

Sune + Sune

2/12
17%

AntiSune + AntiSune

2/12
17%

Sune + Double Sune

Perfect sequences
[14.2 average]

1/12
8%

2/12
17%