The process, however, proved to be more complicated than anticipated.

This process, although not impossible to do in your head, can prove to be difficult for most.

The process is proving much tougher than the Government had expected.

The crumbling process proved more difficult than had been expected.

The process proved complicated and contradictory, as these things do in the real world.

Even then there were hints that the process would prove difficult.

This time, however, the whole process might just prove to be entertaining.

The process could also prove educational for thousands of people.

The process proved far less painful than she had expected.

I believe that this joint process has proven highly effective.