What are the visible elements in the image?

Visible elements in the image:

The image contains handwritten text and symbols on a grid-lined paper. Specifically, the visible elements are:

• The letter 'A' with a dot above it.
• The letter 'B'.
• A fraction or division symbol with 'A' above and 'B' below.
• A stroke that could represent a division or fraction line, followed by the letter 'S'.
• A number '1' followed by a dot.
• A number '4' with a stroke.
• The letter 'S'.
• A handwritten word that appears to be 'учек:' or similar, with two dots above it.
• A small symbol that resembles an arrow or a checkmark.
• Some faint, unidentifiable smudges or marks.