设行列式 $\left|\begin{array}{lll}a_1 & b_1 & c_1 \\ a_2 & b_2 & c_2 \\ a_3 & b_3 & c_3\end{array}\right|=2$, 则 $\left|\begin{array}{lll}2 a_1+b_1 & 3 b_1 & c_1 \\ 2 a_2+b_2 & 3 b_2 & c_2 \\ 2 a_3+b_3 & 3 b_3 & c_3\end{array}\right|=$
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