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

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

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

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

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