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