How Do You Spell HB A1B?

Correct spelling for the English word "Hb A1b" is [ˌe͡ɪt͡ʃbˈiː ˌe͡ɪ wˈɒn bˈiː], [ˌe‍ɪt‍ʃbˈiː ˌe‍ɪ wˈɒn bˈiː], [ˌeɪ_tʃ_b_ˈiː_ ˌeɪ w_ˈɒ_n b_ˈiː] (IPA phonetic alphabet).