A few million or billion years
Lets calculate... A year = 356 * 24 * 60 * 60 seconds
So a year is 31,536,000 seconds... You put one in every 20 secs...
1,576,800 Keys a year, with NO brakes.
S itll take you about 6.8 * 1011 Years, that means 680,000,000,000 Years.
Itll take half a quadrillion years. The sun will run out of energy before you tried out all combinations.mMaybe even a new universe gets born before.
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