Main spellings (~93%)
⟨or⟩ ~80%
The spelling ⟨or⟩ is the dominant way to write this sound.
Very reliable! When you see ⟨or⟩, it almost always makes the /ɔr/ sound. The main exception is after ⟨w⟩, where ⟨or⟩ often becomes /ɜr/ instead (like work, world, worm).
⟨ore⟩ ~8%
Word-final ⟨ore⟩ is a reliable spelling for this sound.
⟨ar⟩ after W ~5%
After the letter ⟨w⟩, the spelling ⟨ar⟩ makes the /ɔr/ sound instead of /ɑr/.
W changes everything! Compare: car (/ɑr/) vs war (/ɔr/). The ⟨w⟩ before ⟨ar⟩ shifts the vowel.