Of course you could have many more prefixes and suffixes and therefore a lot more combination for domain name would be possible. This as you will realise could be a lot of handwork.

Sites like qwho.com or betterwhois.com are fast and return detailed information about the registered domain name. Detailed information which includes registrant name and address, helps you contact the owner of the domain name in case you want to purchase the domain name from him/her.

Using register.com one can make whois queries for multiple domain names with one or two keywords at the same time. It automatically constructs domain names and gives you a report within seconds.