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

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

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

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

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