ROLLING DOOR NO FURTHER A MYSTERY

the diphthong /eɪ/ as in ace and big, ordinarily when ⟨a⟩ is accompanied by one particular, or from time to time two, consonants and after that A further vowel letter—this effects from Middle English lengthening accompanied by the Great Vowel Change: the one of several four ABO blood groups characterised through the existence of antigens des