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

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

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

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

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