I've closed this as Nᴇᴇᴅꜱ Dᴇᴛᴀɪʟꜱ as I don't believe it's answerable as written. First you'll have to define what "irregularly spelled words" means in a language with a bidirectional
many-to-many mapping between sounds and spellings. That is, each sound can be represented by any number of different letter combos
and vice versa. Some would justifiably claim that
EVERY word in English is “irregularly spelled”! Then you're going to have to pick one accent to the complete exclusion of all other accents worldwide. It's also far Tᴏᴏ Bʀᴏᴀᴅ because all answers would be equally valid. —
tchrist ♦ 5 mins ago