What comes once in a minute, twice in a moment, but never in a thousand years?

Common Wrong Answers
“The letter E”
While the letter E appears frequently in words, it does not specifically fit the criteria of appearing once in 'minute', twice in 'moment', and not at all in 'a thousand years'.
“Time”
Time is a concept that can be measured in minutes, moments, and years, but it does not match the specific occurrences defined in the riddle.
“The number 1”
The number 1 can represent a singular moment or minute, but it does not relate to the letter occurrences described in the riddle.
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