Yet Another 2-Bit Problem

It is finally the year 2022! Bob is really excited since he really likes the number two. Bob also loves binary numbers. He thinks a number is $kewl$ if it has exactly two zeros in it's binary representation. For example, he thinks the number $4$ is $kewl$, since it's binary representation is $100$, which has two zeros. Other examples of $kewl$ numbers are $6,9,10$. The number $8$ is not $kewl$, si