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

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

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

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

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