1
2
val EVIL_urban = SEQ(STAR(STAR(CHAR('a'))), CHAR('b'))
3
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assert(size(der('a', der('a', EVIL_urban))) == 28)
5
assert(size(der('a', der('a', der('a', EVIL_urban)))) == 58)
6
7
assert(size(ders("aaaaaa".toList, EVIL_urban)) == 8)