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

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

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

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

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