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