| - Each entry can be an input (creates an FSA) or input/ouput (creates an FST).
- Separate each entry with space or newline.
- If all outputs are ints >= 0 then outputs are numeric (sum as you traverse); otherwise outputs are strings (concatenate as you traverse).
- NEXT-optimized arcs (whose target is the next node) are red.
- A bolded arc means the next node is final.
- See this blog post for details and examples.
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