The Delaware languages, also known as the Lenape languages, are Munsee and Unami, two closely related languages of the Eastern Algonquian subgroup of the Algonquian language family.
There is no standard writing system for either Munsee or Unami. Linguists have tended to use common phonetic transcription symbols of the type found in the International Phonetic Alphabet or similar Americanist symbols in order to represent sounds that are not consistently represented in conventional standard writing systems.
Europeans writing down Delaware words and sentences have tended to use adaptations of European alphabets and associated conventions. The quality of such renditions have varied widely, as Europeans attempted to record sounds and sound combinations they were not familiar with (Wikipedia).