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