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