Input (grade 12): Before coming under German rule in 1884, the town was also known as Cameroons Town; thereafter it became Kamerunstadt ("Camaroon City"), the capital of German Kamerun.
Output (grade 10): In 1884 German people came to Duala and changed its name to Kamarunstadt ("Camaroon City") and made it the capital of German Kamerun.