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