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

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

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

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

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