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

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

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

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

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