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

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

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

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

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