For the first time the Games were held on a four year cycle as planned.
It is usually held in a four year cycle at different locations.
General elections to the council are held on a four year cycle.
The old Chinese calendar was based on a cycle of 60 years.
I just want to direct one episode in the next two year cycle.
There are 11 leap years in a 30 year cycle.
The overall basis for it is provided by cycles of 57 years.
Other traditions were established as the students moved through the 4 year cycle.
A certain number of credits must be obtained over 5 year cycles.
For example, sun spot activity varies over 11 year cycles.
