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

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

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

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

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