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