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

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

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

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

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