\documentclass[12pt]{article}
\font\sss=cmssdc10
\def\bidione{\begingroup\sss bidi\endgroup}
\def\biditwo{\begingroup\sffamily bidi\endgroup}
\def\bidithree{\begingroup\sffamily b\i d\i\endgroup}
\def\bidifour{b\kern -.07em\raise .25ex\hbox {i}\kern -0.06em d\kern -.1em\raise 0.25ex\hbox{i}\ignorespaces}
\def\bidifive{\begingroup\sffamily b\kern -.07em\raise .22ex\hbox {i}\kern -0.06em d\kern -.1em\raise 0.22ex\hbox{i}\endgroup\ignorespaces}
\begin{document}\thispagestyle{empty}\parindent=0pt
This document is typeset using \bidione.\par
This document is typeset using \biditwo.\par
This document is typeset using \bidithree.\par
This document is typeset using \bidifour.\par
This document is typeset using \bidifive.
\end{document}