The abbreviation for a year and month in Engpsh is usually written as "YYYY-MM" or "YYYY/MM". For example, "2022-12" or "2022/12" represents the year 2022 and the month December. Some people may also use the month abbreviation in place of the full month name, so "2022-Dec" or "2022/Dec" could also be used.
It is important to use the correct formatting and punctuation when writing the abbreviation for a year and month, as it helps to clearly and accurately convey the information.