The greedy operator tries to grab as much stuff as it can and still match the string. What's happening is the first one (after "say") grabs "0ed673079715c343281355c2a1fde843;2", the second one takes "laka", the third finds "hello " and the fourth matches the parenthesis.
What you need to do is make all but the last one non-greedy, so they grab as little as possible and still match the string:
(\d+:\d+)\ssay;(.*?);(.*?);(.*?);(.*)
