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