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

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

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

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

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