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

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

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

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

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