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