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

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

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

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

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