\documentstyle[rmit-std]{article}

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\hyphenchar\thair=-1
\newfont{\thairz}{thairz10 scaled \magstep5}
\hyphenchar\thairz=-1
\newfont{\thaii}{thaii10 scaled \magstep5}
\hyphenchar\thaii=-1
\newfont{\thaibx}{thaibx10 scaled \magstep5}
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\newfont{\thaiby}{thaiby10 scaled \magstep5}
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\newfont{\thaibz}{thaibz10 scaled \magstep5}
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\newfont{\thaisbz}{thaibz10 scaled \magstep2}
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\begin{document}
\begin{center}
\Large
Some Sample of Thai in {\TeX}
\end{center}

\sloppy

\thair
noahya chaahyi thum noah bl % 2 p37
noahng noih psah mmee ngah ngahmm bl % 3 p37
parruh thah yaah bl % 4 p37
noahya chaahyi noum noahng noihpsah mmah bl % 5 p37
pasheung mmee dkum noum bl % 6 p37
chaahng liahww liah noahya wwihchaah bl % 7 p37
mmee kwno kwno chaah noahno bl % 8 p37
noahya noum ngah mmah kweuno bl  % 9 p37
% p42
thnoahya kwwwahmm mmee thshoono bl
ajno lium paoono mmee chaahww noah bl
noahya chaahyi kwwwrr thum ngahno aathno noahya wwih chaah bl
mmah thmano ayww liah nouh

\thairz
noahya chaahyi thum noah.. bl % 2 p37
noahng noih psah mmee ngah ngahmm.. bl % 3 p37
parruh thah yaah.. bl % 4 p37
noahya chaahyi noum noahng noihpsah mmah.. bl % 5 p37
pasheung mmee dkum noum.. bl % 6 p37
chaahng liahww liah noahya wwihchaah.. bl % 7 p37
mmee kwno kwno chaah noahno.. bl % 8 p37
noahya noum ngah mmah kweuno.. bl  % 9 p37
% p42
thnoahya kwwwahmm mmee thshoono.. bl
ajno lium paoono mmee chaahww noah.. bl
noahya chaahyi kwwwrr thum ngahno aathno noahya wwih chaah.. bl
mmah thmano ayww liah nouh..

\thaii
noahya chaahyi thum noah bl % 2 p37
noahng noih psah mmee ngah ngahmm bl % 3 p37
parruh thah yaah bl % 4 p37
noahya chaahyi noum noahng noihpsah mmah bl % 5 p37
pasheung mmee dkum noum bl % 6 p37
chaahng liahww liah noahya wwihchaah bl % 7 p37
mmee kwno kwno chaah noahno bl % 8 p37
noahya noum ngah mmah kweuno bl  % 9 p37
% p42
thnoahya kwwwahmm mmee thshoono bl
ajno lium paoono mmee chaahww noah bl
noahya chaahyi kwwwrr thum ngahno aathno noahya wwih chaah bl
mmah thmano ayww liah nouh

\thaibx
noahya chaahyi thum noah bl % 2 p37
noahng noih psah mmee ngah ngahmm bl % 3 p37
parruh thah yaah bl % 4 p37
noahya chaahyi noum noahng noihpsah mmah bl % 5 p37
pasheung mmee dkum noum bl % 6 p37
chaahng liahww liah noahya wwihchaah bl % 7 p37
mmee kwno kwno chaah noahno bl % 8 p37
noahya noum ngah mmah kweuno bl  % 9 p37
% p42
thnoahya kwwwahmm mmee thshoono bl
ajno lium paoono mmee chaahww noah bl
noahya chaahyi kwwwrr thum ngahno aathno noahya wwih chaah bl
mmah thmano ayww liah nouh

\thaiby
noahya chaahyi thum noah bl % 2 p37
noahng noih psah mmee ngah ngahmm bl % 3 p37
parruh thah yaah bl % 4 p37
noahya chaahyi noum noahng noihpsah mmah bl % 5 p37
pasheung mmee dkum noum bl % 6 p37
chaahng liahww liah noahya wwihchaah bl % 7 p37
mmee kwno kwno chaah noahno bl % 8 p37
noahya noum ngah mmah kweuno bl  % 9 p37
% p42
thnoahya kwwwahmm mmee thshoono bl
ajno lium paoono mmee chaahww noah bl
noahya chaahyi kwwwrr thum ngahno aathno noahya wwih chaah bl
mmah thmano ayww liah nouh

\thaibz
noahya chaahyi thum noah bl % 2 p37
noahng noih psah mmee ngah ngahmm bl % 3 p37
parruh thah yaah bl % 4 p37
noahya chaahyi noum noahng noihpsah mmah bl % 5 p37
pasheung mmee dkum noum bl % 6 p37
chaahng liahww liah noahya wwihchaah bl % 7 p37
mmee kwno kwno chaah noahno bl % 8 p37
noahya noum ngah mmah kweuno bl  % 9 p37
% p42
thnoahya kwwwahmm mmee thshoono bl
ajno lium paoono mmee chaahww noah bl
noahya chaahyi kwwwrr thum ngahno aathno noahya wwih chaah bl
mmah thmano ayww liah nouh

\thaisbz
noahya chaahyi thum noah bl % 2 p37
noahng noih psah mmee ngah ngahmm bl % 3 p37
parruh thah yaah bl % 4 p37
noahya chaahyi noum noahng noihpsah mmah bl % 5 p37
pasheung mmee dkum noum bl % 6 p37
chaahng liahww liah noahya wwihchaah bl % 7 p37
mmee kwno kwno chaah noahno bl % 8 p37
noahya noum ngah mmah kweuno bl  % 9 p37
% p42
thnoahya kwwwahmm mmee thshoono bl
ajno lium paoono mmee chaahww noah bl
noahya chaahyi kwwwrr thum ngahno aathno noahya wwih chaah bl
mmah thmano ayww liah nouh

\end{document}