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

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

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

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

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