// then sequential search using popcount over a int
// then sequential search using popcount over a char
// then sequential search bit a bit
// then sequential search using popcount over a int
// then sequential search using popcount over a char
// then sequential search bit a bit
// then sequential search using popcount over a int
// then sequential search using popcount over a char
// then sequential search bit a bit
// then sequential search using popcount over a int
// then sequential search using popcount over a char
// then sequential search bit a bit