clue-by-four

auxiliary booster grain bore diameter of outer ring candied cherry cytoplasmic sterility DAR (data access register) discouraged worker fc (crystalizable fragment) green frog guzheng meteorrlogical aids serice mitropoulos near-earth satellite rain work Scabiosa ochroleuca seafloor hot brine structured system design sunsets swallow-tailed hawks time-undervoltage protection valedictions