Phonetics and the IPA 4, Exercise 1: airstream and family [kʼ] ejective (apostrophe) glottalic egressive [ɓ] implosive (hooked letter) glottalic ingressive (plus lung air; most are voiced) [ǃ] click (alveolar) lingual ingressive [tsʼ] ejective affricate glottalic egressive [ɠ] implosive (velar) glottalic ingressive (plus lung air) [ǀ] click (dental) lingual ingressive Clue: apostrophe = ejective; hooked stop letter = implosive; the five special symbols ʘ ǀ ǃ ǂ ǁ = clicks.