The constant yield method is different option to the ratable
accrual method. It is one of the two ways the secondary market uses
to calculate the accrued discount bonds that are traded.
According to SOWPODS (the combination of Scrabble dictionaries
used around the world) there are 2 words with the pattern RA-A-L-.
That is, seven letter words with 1st letter R and 2nd letter A and
4th letter A and 6th letter L. In alphabetical order, they are: