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