\font\fonttest=test1

\def\testone{\labels{%
\moveMM(0.49953cm,0.28839cm,{A})%
\moveMM(1.4986cm,0.28839cm,{B})%
\moveMM(2.49767cm,0.28839cm,{C})%
\moveMM(0.99905cm,1.15361cm,{D})%
\moveMM(1.99814cm,1.15361cm,{E})%
\moveMM(1.4986cm,2.01884cm,{F})%
\moveMM(0.99905cm,0.57681cm,{a})%
\moveMM(1.99814cm,0.57681cm,{b})%
\moveMM(1.4986cm,1.44203cm,{c})%
}{\fonttest \char1}}