(0 20 19 4 2)(1 15 7 5 3)(6 10 8)(9 13 11)(12 17 14)(16 21 18)
ALLOWS (11/8)-SEQUENCE
1: (0 4 6)
(0 10 8 6 2)(1 15 7 5 3)(4 20 19)(9 13 11)(12 17 14)(16 21 18)
2: (3 7 5)
(0 10 8 6 2)(1 15 7)(3)(4 20 19)(5)(9 13 11)(12 17 14)(16 21 18)
3: (2 8 6)
(0 10 8)(1 15 7)(2)(3)(4 20 19)(5)(6)(9 13 11)(12 17 14)(16 21 18)
4: (1 15 7)
(0 10 8)(1)(2)(3)(4 20 19)(5)(6)(7)(9 13 11)(12 17 14)(15)(16 21 18)