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1. Universities in the east are better equipped, while those in the west are relatively poor.
2. Allan Clark kept talking the price up, while Wilkinson kept knocking it down.
3. The husband spent all his money drinking, while his wife saved all hers for the family.
4. Some guests spoke pleasantly and behaved politely, while others wee insulting and impolite.
5. Outwardly Sara was friendly towards all those concerned, while inwardly she was angry.