The Previous Program

The Previous Combinatory Program will result in a very huge text-file whose size is nearly 2.3 Gigabyte.
We have 26 letter.
We need words of length 6.
So, we have 6 slots.
Each can receive 26 letters.
Thus, the final number of words is 26*26*26*26*26*26 = 26^6 = 308,915,776 different words.
This program will take nearly 2 hours using an average computer to finish the 2.3 Gigabyte text file.