<prompt> Translate the following text to SwahiliBut one of the regents was Ieyasu Tokugawa, who had been biding his time at Edo for 12 years, nurturing dynastic ambitions of his own.  <response>: Ieyasu Tokugawa alikuwa mfalme wa Edo kwa miaka 12 na alikuwa na tamaa ya kuanzisha ufalme. 