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

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

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

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

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