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