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