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

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

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

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

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