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