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