Based on the news about the stock in the past five trading days, please predict the rise or fall of the stock in the next trading day. If the stock is predicted to rise in the next trading day, please output [Rise], if the stock is predicted to fall in the next trading day, please output [Decrease].

Date:2021-12-23, Stock:NVO, The news for the past five days is as follows:
2021-12-16: nan
2021-12-17: NEWS1: Novo Nordisk announces supply challenges for Wegovy® in the US.NEWS2: Novo Nordisk Down After Word It Won't Meet H1 2022  Wegovy Demand.
2021-12-20: NEWS1: GSK vs. NVO: Which Stock Is the Better Value Option?.NEWS2: Novo Nordisk Shares Slump As Wegovy Hits US Supply Issues; Deutsche Bank Downgrades.NEWS3: Novo Nordisk shares tank after key drug hope hit by U.S. supply issues.NEWS4: Moderna, AT&T Rise Premarket; United Airlines, Tesla, Exxon Mobil Fall.NEWS5: Novo Nordisk Tumbles as Contractor Issues Hit U.S. Obesity Drug Supply.
2021-12-21: nan
2021-12-22: NEWS1: Novo Nordisk A/S – Share repurchase programme.

Answer: Decrease