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