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Many people are very creative in finding ways to remember things.
They find short words, repeating, remembering those can help avoid silly mistakes and save some time after reading through the questions..
Sharing one below and looking forward to others if you have any…(also point to any such post, I might as well append to it)
LIFO-CRIO,FIFO-COIR
LIFO – Cogs Recent, ending Inventory Outdated.
FIFO – Cogs Outdated, ending Inventory Recent