open front unrounded vowel voiceless dental fricative You'll see «mouse> and know that it's /ma℧s/ since you already know the pronunciation, and when you see ‹house>, you'll recognise the diphthong <ou> that was in <house> and deduce that it's /ha℧s/ like what happens when you voice the voiceless labial plosive or what happens when you nasalise the open back unrounded vowel