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