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

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

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

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

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