Express the following in exponential form:
1. \(7 \times 7 \times 7 \times 7 =\)
2. \(y \times y =\)
3. \(b \times b \times b \times b=\)
4. \(3 \times 3 \times 7 \times 7 \times 7 =\)
5. \(3 \times 3 \times b \times b=\)
6. \(b \times b \times b \times y \times y \times y \times y \times q =\)