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

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

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

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

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