According to the rules you can append up to 5 random chars. But you don't have to.
The potential for case changes in the words really makes the keyspace much larger, since we currently don't know the length of the words.
The potential for case changes in the words really makes the keyspace much larger, since we currently don't know the length of the words.
One approach would be to lease a massive cluster of cloud computers to carry out the calculations. However, this option isn't financially viable for a lone developer.
Maybe there's an alternative way of approaching the problem.