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

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

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

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

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