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Use "twelves" in a sentence
"She was sifting through the selection of needles and this time chose the largest she could find, number twelves."
"I own 6 twelves and 5 sixteens, I can't remember when a twelve left the gun cabinet."
"A full group of the six of us listened to Pam while she gave a brief overview of the practice and what she would be doing, including mentioning the twelves special points in the body that are important in Asian Medicine and the flow of Chi."