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

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

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

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

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