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

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

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

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

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