Or maybe there is a IV chord. Try:

(I) I took my troubles down to (IV) Madame Ruth
(I)You know that gypsy with the (IV) gold-capped tooth
(I) She's got a pad down on Thirty-Fourth and Vine
Sellin' little bottles of (V) Love Potion No. 9

I'll try to work it out when I get home and if nobody has posted anything better by tomorrow night, I'll let you know what I came up with.

cheers,

david