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