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

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

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

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

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