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

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

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

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

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