Let $\{a_{n}\}_{n \geq 0}$ and $\{b_{n}\}_{n \geq 0}$ be two sequences of integer numbers such that:

i. $a_{0}=0$, $b_{0}=8$.

ii. For every $n \geq 0$, $a_{n+2}=2a_{n+1}-a_{n}+2$, $b_{n+2}=2b_{n+1}-b_{n}$.

iii. $a_{n}^{2}+b_{n}^{2}$ is a perfect square for every $n \geq 0$.

Find at least two values of the pair $(a_{1992},\, b_{1992})$.
1. **Define the sequences and initial conditions:**
   \[
   \{a_n\}_{n \geq 0} \quad \text{with} \quad a_0 = 0
   \]
   \[
   \{b_n\}_{n \geq 0} \quad \text{with} \quad b_0 = 8
   \]

2. **Given recurrence relations:**
   \[
   a_{n+2} = 2a_{n+1} - a_n + 2
   \]
   \[
   b_{n+2} = 2b_{n+1} - b_n
   \]

3. **Solve the recurrence relation for \(a_n\):**
   - The characteristic equation for \(a_{n+2} = 2a_{n+1} - a_n\) is:
     \[
     r^2 - 2r + 1 = 0 \implies (r-1)^2 = 0 \implies r = 1 \text{ (double root)}
     \]
   - The general solution for the homogeneous part is:
     \[
     a_n^{(h)} = (c_1 + c_2 n)
     \]
   - For the non-homogeneous part, we guess a particular solution of the form \(a_n^{(p)} = A\). Substituting into the recurrence relation:
     \[
     A = 2A - A + 2 \implies A = 2
     \]
   - Thus, the general solution for \(a_n\) is:
     \[
     a_n = c_1 + c_2 n + 2
     \]
   - Using the initial conditions \(a_0 = 0\):
     \[
     0 = c_1 + 2 \implies c_1 = -2
     \]
   - Therefore:
     \[
     a_n = -2 + c_2 n + 2 = c_2 n
     \]

4. **Solve the recurrence relation for \(b_n\):**
   - The characteristic equation for \(b_{n+2} = 2b_{n+1} - b_n\) is:
     \[
     r^2 - 2r + 1 = 0 \implies (r-1)^2 = 0 \implies r = 1 \text{ (double root)}
     \]
   - The general solution for \(b_n\) is:
     \[
     b_n = d_1 + d_2 n
     \]
   - Using the initial conditions \(b_0 = 8\):
     \[
     8 = d_1 \implies d_1 = 8
     \]
   - Therefore:
     \[
     b_n = 8 + d_2 n
     \]

5. **Given that \(a_n^2 + b_n^2\) is a perfect square:**
   \[
   (c_2 n)^2 + (8 + d_2 n)^2 = k^2
   \]
   - For this to be a perfect square for all \(n\), we need:
     \[
     c_2^2 n^2 + (8 + d_2 n)^2 = k^2
     \]
   - Expanding and equating coefficients, we find:
     \[
     c_2^2 n^2 + 64 + 16 d_2 n + d_2^2 n^2 = k^2
     \]
   - For this to be a perfect square, \(c_2 = d_2\) and \(d_2 = \pm 16\).

6. **Find specific values for \(a_{1992}\) and \(b_{1992}\):**
   - If \(c_2 = 16\):
     \[
     a_{1992} = 16 \cdot 1992 = 31872
     \]
     \[
     b_{1992} = 8 + 16 \cdot 1992 = 31880
     \]
   - If \(c_2 = -16\):
     \[
     a_{1992} = -16 \cdot 1992 = -31872
     \]
     \[
     b_{1992} = 8 - 16 \cdot 1992 = -31864
     \]

The final answer is \( \boxed{ (31872, 31880) } \) and \((-31872, -31864)\).