Obsessed as I am with alphabets, I have had to identify the 26 flipped letters:
Most are from the International Phonetic Alphabet – which you can search on WikiPedia.
ʎ is a a phonetic sign for the sound written ‘gl’ in Italian or ‘lj/љ’ in the languages formerly known as Serbo-Croat
x is just x
ʍ is the way I pronounce the first letters of “what”, though this is not standard English
ʌ is a short ‘u’ sound
n is just n
ʇ is the click sound often written ‘tsk’ in English
s is just s
ɹ is the normal English pronunciation of ‘r’ (unrolled)
b is just b
d is just d
o is just o
u is just u
ɯ is Turkish ‘ı’ sound, a very short ‘uh’
1 is the number 1
ʞ is an obsolete phonetic sign for a click sound (now written ‘kǃ’)
ظ is the rarest letter of the Arabic alphabet (Ẓāʼ).
ı is the Turkish letter which is written ɯ in phonetic script
ɥ is a sound halfway between ‘w’ and ‘y’, as in the start of the French word ‘oui’
b is just b
ɟ is a sound a bit like ‘y’ found only in the Natsilingmiutut dialect of Inuit
ǝ is the phonetic sound for the ‘scha’ or unstressed vowel, as in the second syllable of ‘vowel’ when you pronounce it at normal speed. It is also pronounced a bit differently (like standard English ‘a’ in ‘hat’) as a normal letter in Azeri.
p is just p
ɔ is the short ‘o’ in German and Dutch (and some English dialects, esp Australian and New Zealand). A long ɔ (ɔ:) is the standard English ‘aw’ sound.
q is just q
ɐ is the standard English short ‘u’.