ctrl+K plus:
! Grave
' Acute accent
> Circumflex accent
? Tilde
- Macron
( Breve
. Dot above
: Diaeresis
, Cedilla
_ Underline
/ Stroke
" Double acute (Hungarumlaut)
; Ogonek
< Caron
0 Ring above
2 Hook
9 Horn
= Cyrillic
* Greek
% Greek/Cyrillic special
+ Smalls: Arabic, caps: Hebrew
3 Some Latin/Greek/Cyrillic
4 Bopomofo
5 Hiragana
6 Katakana