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

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

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

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

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