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

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

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

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

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