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

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

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

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

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