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

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

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

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

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