We ran out a long, long time ago. 26^3 is only 17,576 and 26^4 is less than half a million (even if we intentionally set out to increment them rather than use t

We ran out a long, long time ago. 26^3 is only 17,576 and 26^4 is less than half a million (even if we intentionally set out to increment them rather than use them as meaningful acronyms) yet the birthday paradox gives grave odds for even longer acronyms via random assignment.