% set catcodes for the lowercase Russian letters in koi8-r encoding
\catcode `\^^c1=12 % \cyra
\catcode `\^^c2=12 % \cyrb
\catcode `\^^d7=12 % \cyrv
\catcode `\^^c7=12 % \cyrg
\catcode `\^^c4=12 % \cyrd
\catcode `\^^c5=12 % \cyre
\catcode `\^^a3=12 % \cyryo
\catcode `\^^d6=12 % \cyrzh
\catcode `\^^da=12 % \cyrz
\catcode `\^^c9=12 % \cyri
\catcode `\^^ca=12 % \cyrishrt
\catcode `\^^cb=12 % \cyrk
\catcode `\^^cc=12 % \cyrl
\catcode `\^^cd=12 % \cyrm
\catcode `\^^ce=12 % \cyrn
\catcode `\^^cf=12 % \cyro
\catcode `\^^d0=12 % \cyrp
\catcode `\^^d2=12 % \cyrr
\catcode `\^^d3=12 % \cyrs
\catcode `\^^d4=12 % \cyrt
\catcode `\^^d5=12 % \cyru
\catcode `\^^c6=12 % \cyrf
\catcode `\^^c8=12 % \cyrh
\catcode `\^^c3=12 % \cyrc
\catcode `\^^de=12 % \cyrch
\catcode `\^^db=12 % \cyrsh
\catcode `\^^dd=12 % \cyrshch
\catcode `\^^df=12 % \cyrhrdsn
\catcode `\^^d9=12 % \cyrery
\catcode `\^^d8=12 % \cyrsftsn
\catcode `\^^dc=12 % \cyrerev
\catcode `\^^c0=12 % \cyryu
\catcode `\^^d1=12 % \cyrya
% additional letters for koi8-ru
\catcode `\^^a4=12 % \cyrie
\catcode `\^^a6=12 % \cyrii
\catcode `\^^a7=12 % \cyryi
\catcode `\^^ad=12 % \cyrgup
\catcode `\^^ae=12 % \cyrushrt
