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