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