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