When the guttural consonants 'ayin, he, and het follow long vowels at the end of a word, they are vocalized with patah (referred to as "furtive patah"). In ALA/LC standard romanization, this patah is treated differently depending on which consonant it vocalizes.

     We transcribe it as an "a" AFTER the consonant if the consonant is 'ayin or he:
                                         Yehoshu'a;  raki'a; gavoha

     We transcribe it as an "a" BEFORE the consonant if the consonant is het:
                                                  luah; siah