Q48.
(1)\\
\includegraphics[alt={}]{smile-01dafb46d441026fc3aafca354b5706d91a2cd27}
(2)\\
\includegraphics[alt={}]{smile-dab4be7699bd6779598d293487c266a38a6376d8}
(3)\\
\includegraphics[alt={}]{smile-0ceb5f0f9f5b5e07d6d03f33dfbf4cd3b30d7c14}
(4)\\
\includegraphics[alt={}]{smile-ad1be1a091b9b060695445ead256d5be2f6f4e6f}