Dayna writes the integers $$1,2,3,4,5,6,7,8,9,10,11,12$$on a chalkboard, then she erases the integers from $1$ through $6$, as well as their multiplicative inverses $\pmod{13}$. What is the only integer Dayna does not erase?
<|im_start|>system
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<|im_start|>user
Dayna writes the integers $$1,2,3,4,5,6,7,8,9,10,11,12$$on a chalkboard, then she erases the integers from $1$ through $6$, as well as their multiplicative inverses $\pmod{13}$. What is the only integer Dayna does not erase?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
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user
12
Dayna writes the integers $$1,2,3,4,5,6,7,8,9,10,11,12$$on a chalkboard, then she erases the integers from $1$ through $6$, as well as their multiplicative inverses $\pmod{13}$. What is the only integer Dayna does not erase?
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