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

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

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

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

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