The phrase "were commissioned" can be substituted with a number of synonyms, including "were authorized," "were tasked," "were charged," "were mandated," "were appointed," and "were delegated." Each of these phrases carries a similar meaning, indicating that a person or entity was given the responsibility or authority to complete a specific task or project. These synonyms can be useful when trying to avoid repetition in writing or when seeking a more nuanced way to convey the idea of commissioned work. By utilizing these substitutes, writers can add variety and interest to their prose while maintaining clarity and precision.