1 # common meaning of second character
17 ; Ogonek (+Retroflex Hook/Tail)
29 % Greek/Cyrillic special
30 + lc: Arabic, uc: Hebrew
31 3 some Latin/Greek/Cyrillic letters
33 5 Hiragana (also lc + a/e/i/o/u)
34 6 Katakana (also uc + a/e/i/o/u)
35 J + Korean Jamo (also K)
40 =e € # as found in vim
41 Eu € # as found in zsh
43 =N ₦ #XXX =n for consistency?
52 3: … # opposite of ⋮ (more logical would be to swap with .3 ⋯)
55 .1 ․ # obvious location, even though ‥ and … are at inconsistent .. and 3:
57 <3 ♥ # easy alias to trigraph cH-
58 :) ☺ # easy alias to 0u
63 # obvious line drawing gaps
67 dD ╷ # goddamn! stupid arabic dad got there first
76 2- ╌ # exactly like to 3 and 4
80 BF ╳ # FD and BD combined; FB already in use
84 HW Ƕ # HV conflicts with vh line drawing
88 # old/middle english (uncommon)
89 #WY Ƿ # replaced by UU, later W
92 #Gy ȝ # do not use yy to keep y column clear
94 Es Ʃ # ES already in use
95 es ʃ # can't use sh; s1 would be another option
99 !C ǀ # corresponding zulu letter
100 !Q ǃ # idem; !. would be much more intuitive (previously ʗ)
101 !X ǁ # idem; or !/ (previously ʖ)
102 !A ǂ # Alveolar; !- looks alike, != even more so but already occupied
105 # expected but missing
108 #A0 Ǻ # normal A-ring already provided by AA
119 #ac ℀ # prefer common A-smallCap
121 cu ℆ # co ís present though
125 a" ǟ # a1 # long umlauted, very similar to double acute
127 jo ё # io # consistent with ja/ju
143 l- ƚ # not really a macron, but wouldn't really make sense anyway otherwise
155 # middle tilde #XXX: not tilde above
160 ##n? ᵰ # already a tilde above
168 # not used all that much, better leave x) free
175 #I) Ȋ # )I exists, but should not confuse
185 # usage is similar to inverted breve, just as rare
208 #D2 Ɗ # in use by control char
215 f2 ƒ # looks like a cedilla
226 #P2 Ƥ # in use by control char
241 Y; Ƴ # not a hook below, but Y2 hook above is already present
243 Z2 Ȥ # looks like a cedilla
247 # curls (9 is mostly free because horns are so rare)
250 j9 ʝ # crossed-tail actually
260 #2/ ƻ # rarely used, and double dash is far more logical
268 # turned/inverted (trailing I is uncommon for lowercase, and already used thusly for !I, ?I and NI)
271 #EI Ǝ # would be confusing, as it's not uppercase schwa eI
272 eI ə # schwa, not turned E (latter is very uncommon)
284 #nI ᴎ # reversed capital N, but NI already in use
286 #RI ᴚ # conflicts with RI control char
295 oE ɶ # Oe also available, but E looks capital
297 Ap ɒ #XXX Ao? (AO in use)
310 Op ɤ #XXX oy would look alike
314 #lp ɬ #XXX: lb for 'belt'
324 mL ɰ # like rL (XXX mp?)
326 # small caps (also possible at *s)
335 # more from phonetics extensions
347 sC ꜱ # sc/Sc/SC in use
353 # ipa releases (ⁿ already present as nS)
359 # hangeul jamo consonants at *J
381 # hangeul jamo vowels at *J
400 # hangeul jamo iotized vowels at *K (for Korean)
408 # under development or temporary
411 $PR ► # current PR should be TR
412 $PL ◄ # current PL should be TL
413 $'> ˆ # where to put ^?
414 $'? ˜ # where to put ~?
416 $?" ΅ # tonos+dialytika
433 $,i ͺ # spacing iota subscript
443 # rfc (incorrectly?) maps double to heavy