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

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

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

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

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