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