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

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

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

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

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