(0 20 2)(1 7 5)(3 18 17)(4 21 19 15 9)(6 16 14 12 8)(10 13 11)
ALLOWS (11/8)-SEQUENCE
1: (0 1 2)

(0)(1 20 2 7 5)(3 18 17)(4 21 19 15 9)(6 16 14 12 8)(10 13 11)
2: (2 7 20)

(0)(1 20 5)(2)(3 18 17)(4 21 19 15 9)(6 16 14 12 8)(7)(10 13 11)
3: (4 21 9)

(0)(1 20 5)(2)(3 18 17)(4)(6 16 14 12 8)(7)(9 19 15)(10 13 11)(21)
4: (6 16 8)

(0)(1 20 5)(2)(3 18 17)(4)(6)(7)(8 14 12)(9 19 15)(10 13 11)(16)(21)