Both "Not happy, Jan," and "Not happy, John", are common noms de plume used in short letters to newspaper editors.
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request. ### Instruction: List the MITRE techniques contained in the text. ### Input: Both "Not happy, Jan," and "Not happy, John", are common noms de plume used in short letters to newspaper editors. ### Response: .