"DDRE CDER" is not a real word in any language, so it is impossible to provide an accurate phonetic transcription or spelling explanation using IPA (International Phonetic Alphabet). It is possible that the word is a misspelling or an acronym for something else entirely, making it difficult to provide any meaningful information about its phonetics or spelling. In order to accurately analyze and explain a word's phonetics and spelling, it must be a real word with a recognizable meaning and origin.