16. Elsa makes ice sculptures with ice blocks, 1 ice block can make 1 small ice sculpture, 3 ice blocks can make 1 large ice sculpture. The leftover shavings from making 2 small ice sculptures or 1 large ice sculpture are just enough to make 1 ice block. Given 30 ice blocks, to make the number of small ice sculptures more than the number of large ice sculptures, the maximum number of large ice sculptures that can be made is $\qquad$.
$11$