十项

十 = 一 + 丨 : Mnemonic symbol: a holy cross. Sherlock Holmes (sh-) is investigating a very strange thing he found in the kitchen of the space station (-2): A big pyramid made of ten (十) crosses (十), which are in turn made out of flutes (一) and dinosaur bones (丨).

项 = 工 + 页 : Mnemonic symbol: a necklace (项). Marie Curie (xi) lost her necklace in the anglepod's bathroom (ang4) and tries to get it out of the toilet again. Marie jotted down some calculations (项) on a sheet of paper (页) and uses a steel beam (工) as a lever to get his necklace out by putting the lever at the exact right position and the sheet of paper on top of the other side of the lever.

项 = 工 + 页 : Mnemonic symbol: a necklace (项). Marie Curie (xi) lost her necklace in the anglepod's bathroom (ang4) and tries to get it out of the toilet again. Marie jotted down some calculations (项) on a sheet of paper (页) and uses a steel beam (工) as a lever to get his necklace out by putting the lever at the exact right position and the sheet of paper on top of the other side of the lever.