It's a summer morning, and 6-year-old identical twins Joshua and Jeremiah Stith sit at their desks, crayons in hand, perfecting the letter d. Their 9-year-old brother, Matthew, lounges on a nearby couch immersed in a Beverly Cleary book. MORE: http://216.239.57.104/search?q=cach...w.com/mld/startelegram/news/local/8907725.htm