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