Possible Clues:

• At that time it's sound but soiled
• Being ground, it's getting sound at that time
• Like many pots
• It gets sound at that time, but soiled
• It gets sound at that time, even if it's soiled, perhaps
• At that time on ahead but soiled, it seems
• At that time it's sound, even if it's soiled, perhaps
• At that time get sound but also soiled, perhaps
• Like some jugs
• Made of baked clay, perhaps ware