A-II, B-I, C-III, D-IV

A-IV, B-III, C-II, D-I

A-III, B-IV, C-I, D-II

A-I, B-III, C-II, D-IV

$$ \begin{array}{|c|c|} \hline \text { (Y) } & \text { (Sequence) } \\ \hline \hline \text { Serine } & \text { Thr-Ser-Asp-Ala-Gly } \\ \hline \end{array} $$

$$ \begin{array}{|c|c|} \hline \text { (Y) } & \text { (Sequence) } \\ \hline \hline \text { Serine } & \text { Ser-Asp-Thr-Ala-Gly } \\ \hline \end{array} $$

$$ \begin{array}{|c|c|} \hline \text { (Y) } & \text { (Sequence) } \\ \hline \hline \text { Threonine } & \text { Ser-Thr-Asp-Gly-Ala } \\ \hline \end{array} $$

$$ \begin{array}{|c|c|} \hline \text { (Y) } & \text { (Sequence) } \\ \hline \hline \text { Threonine } & \text { Thr-Ser-Asp-Gly-Ala } \\ \hline \end{array} $$

8

3

4

6