nearLy napping,
        camE a
      tappiNg,
        as Of
    gently Rapping,
at my chambEr door.

documentclass[11pt]{memoir}
usepackage{fancyvrb}
usepackage{DejaVuSansMono}
begin{document}
begin{Verbatim}[xleftmargin=-35mm,commandchars=\{}]
                                      neartextbf{L}y napping,
                                       camtextbf{E} a
                                     tappitextbf{N}g,
                                       as textbf{O}f
                                   gently textbf{R}apping,
                               at my chambtextbf{E}r door.
end{Verbatim}
end{document}