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

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

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

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

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