Well... it's not that impressive is it, specially if achieved by mispelling. It's laborious sure, but... For instance 16th century poet Luís Vaz de Camões wrote

Well... it's not that impressive is it, specially if achieved by mispelling. It's laborious sure, but... For instance 16th century poet Luís Vaz de Camões wrote a wonderfully written Homeric poem of +1000 stanzas of 8 lines with the exact same rhyme scheme. That is a much more impressive and unatainable feat by 99.9999% of the population.