The correct spelling of the phrase "wast placed" is actually "was placed." This phrase is written in an old-fashioned form of English known as Middle English, which was commonly used between the 11th and 15th centuries. In Middle English, the "s" sound was often pronounced as a "z" sound, which is why "wast" (pronounced /wɑst/) was used instead of "was." Today, we no longer use Middle English, so it's important to use modern English spelling when communicating.