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