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

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

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

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

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