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

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

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

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

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