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

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

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

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

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