Article Rewriting for Spinning

I have 30 articles that I need rewritten for article spinning. I need each sentence in each article re-written 3 times. Keywords given for each article must stay in tact. Each version of each sentence will be read and reviewed for correct English and overall understandability. Articles must make complete sense and correct English language and grammar must be used. I prefer the chosen provider to use a web based article spinning software which I will provide access to upon selecting a provider. Experience using this type of system is a plus. Please attach at least 2 samples of your work with your application (preferably a re-write, send original and rewritten articles). Please only respond if you have experience with rewriting articles sentence by sentence for article spinning. Respond with the word ‘SPUN’ somewhere in your message, otherwise your proposal will be ignored.