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

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

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

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

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