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

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

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

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

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