How many 6 digit numbers can be formed using the digits $1,2,3$ so that the digit 1 occur 2 times in each number?

Question

$\begin{array}{1 1} 2^4.^4C_2 \\ ^6C_2 \\ 4^2.^6C_2 \\ 2^4.^6C_2 \end{array}$