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

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

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

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

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