t27 basics 8: three values of a trit

The three values of a trit as t27 constants, and how three trits give 27 combinations. Lesson 8 of the t27 basics course.

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Where the numbers come from

The lesson spec public/t27/files/specs/basics/08_trits.t27, compiled clean on 7 backends by public/t27/t27_compiler.wasm, whose tests pass in the site test runner
Compiler verdicts, error lines, code and counts quoted on this page are what the same wasm answered in node 22 when the course was authored; words without a run behind them are said to be read, not run