(In reply to Candidates
I am not sure that the 7,8,4 appearance generates only those two - I remember TUMMY and TELLS and do not want at this stage tell you more about this case,
However if you allow even a single letter out of the equation you
will get SORRY, WORRY, TWEED and some others.
It is a D4 puzzle and it demands such a research as to be sure that the majority of the letters fittung "$" is Y, S, O or other.
I believe those hints are sufficient at the stage you are now.
Rem: removed redundant samples and added TWEED .
Edited on June 7, 2014, 5:10 am