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

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

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

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

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