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