The extensions of the Zoitei writing system are added with the character '.
These extensions indicate an alternate sound.
| 4L | 5L | 6q | 7q |
| 0s | m' | p' | f' | þ' (th') |
| 1s | n' | t' | s' | š' (sh') |
| 2s | ŋ' (q') | k' | x' | ł' (lh') |
| 3B | l' | b' | v' | w' |
| 4B | c' | d' | z' | ž' (zh') |
| 5B | r' | g' | ň' (nh') | ř' (rh') |
| IPA | English word | Zoitei Romanized Phonetic Spelling |
| m' | ʙ̥ | - | - |
| p' | pʼ | - | - |
| f' | ɸ | - | - |
| th' / þ' | | - | - |
| n' | | - | - |
| t' | tʼ | - | - |
| s' | | - | - |
| sh' / š' | | - | - |
| q' / ŋ' | | - | - |
| k' | q | - | - |
| x' | h↓ | - | - |
| lh' / ł' | x | loch | loł' |
| l' | ʙ | - | - |
| b' | ʘ | - | - |
| v' | β | - | - |
| w' | | - | - |
| c' | ɾ | - | - |
| d' | ǀ | - | - |
| z' | | - | - |
| zh' / ž' | | - | - |
| r' | r | - | - |
| g' | ǃ | - | - |
| nh' / ň' | | - | - |
| rh' / ř' | ɣ | - | - |
r': Rolled r
c': Sound between l and r
lh' / ł': ł with stop OR alternatively long 'k'
rh' / ř': Rolled ř
f': Long p, similar to an f (halfway between p and f)
v': Long b, similar to a v (halfway between b and v)
p': Pop sound (exasperated p)
t': Tick sound (exasperated t)
k': Click sound (exasperated k)
m': Unvoiced buzzing sound (trilled p)
l': Buzzing sound (trilled b)
b': "Kissing" Click
d': "Tsk" Click
k': Back of mouth click
x': Gasp / breath in