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