When creating a list of keywords for Adwords it can be useful to combine different variations of keywords to create a longer list, e.g. to have words in a different order or create multiple match types.
Below are links to useful sites that allow keyword manipulation / combination
https://lxrmarketplace.com/ppc-keyword-combination-tool.html (note: only allows a list of 15 keywords per field, so is limited - allows for every word order to be created in one click)
http://www.keywordmixer.com/ (note: only has 3 field boxes but does allow you to reverse the order of words which can be useful)
http://www.adwordswrapper.com/ (assits in creating a list that has different match types or a mix of match types). There is also http://www.mikes-marketing-tools.com/adwords-wrapper.html
http://best-keyword-mixer.blogspot.com.au/ (mix of options from the above 3)
http://tools.seobook.com/keyword-list/generator.php (allows you to move list order to create more options, similar to option 1 above but more manual, but allows for more than 15 words per field)