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

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

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

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

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