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

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

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

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

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