(Print) Use this randomly generated list as your call list when playing the game. There is no need to say the BINGO column name. Place some kind of mark (like an X, a checkmark, a dot, tally mark, etc) on each cell as you announce it, to keep track. You can also cut out each item, place them in a bag and pull words from the bag.
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index out of bounds error
optimization issues
player thinks your bad game design as a bug
players speak over each other
server doesn't receive input from client
DMs full of error logs
forget to fix a simple bug
players misdiagnose issues for you
player tests but doesn't give any feedback
players complain about lag
new error you've never seen before
player discovers non-networked object and points it out