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

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

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

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

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