\input amstex
\input cyracc.def
\font\tencyr=wncyr10
\def\cyr#1{{\tencyr\cyracc#1}}

\noindent
\vbox{%
\hbox{\cyr{ABVGDDJEZHZIJKLLJMNNJOPRST\'CUFHCCH\Dzh{}SH}}
\hbox{\cyr{abvgddjezhzijklljmnnjoprst\'cufhcch\dzh{}sh}}
\bye