Get all one symbol words from NFA #269

Job	Run time
warnings-base (ubuntu-latest)	3m 2s
run-test-performance-base (ubuntu-latest)	5m 29s
warnings-base (macos-latest)	4m 24s
run-tests (ubuntu-latest)	3m 39s
run-test-performance-base (macos-latest)	5m 26s
run-tests (macos-latest)	4m 34s
run-test-performance (ubuntu-latest)	4m 52s
run-test-performance (macos-latest)	6m 40s
warnings-new (ubuntu-latest)	3m 54s
warnings-new (macos-latest)	4m 1s
code-coverage	3m 41s
compare-performance (ubuntu-latest)	24s
compare-performance (macos-latest)	53s
compare-versions (ubuntu-latest)	8s
compare-versions (macos-latest)	12s
	51m 19s

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