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

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

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

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

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