齒及

齿 = 止 + 凵 + 人 : Charlie Chaplin (ch) has an aching tooth (齿), and Neanderthal Man (人) is about to help him take it out using an electrical barrier (止) in the space station (Ø3). They attached the barrier to the tooth and as Neanderthal Man will plug it into the receptacle (凵), the barrier will pull out the tooth.

及 = ㇏ + 乃 : Mnemonic symbol: Chinese General 宇文化及 (yu3 wen2 hua4 ji2) from the seventh century.

及 = ㇏ + 乃 : Just inside the space station's entrance a poltergeist is harassing Joan of Arc and Yuwen Huaji by pointing with his fingers at them.