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

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

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

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

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