[An Acrobatic Riddle]

Spoiler

A Shoe?

 

[Letter to Word Riddle]

Each of the following phrases corresponds to a number.  
For example:
 N. in a D. = P. in a Q. = D.U. to P.M.
Represents 
2 Nickels in a Dime = 2 Pints in a Quart = 2 Dice Used to Play Monopoly

If the numbers used form a sequence, determine the numbers and the phrases depicted below.
S. in a Y.         =    S. on a S.            =    F. on M.R.
F. in a F.        =     P. on a P.T.            =    O. in a B.I.
A. on an O.        =    K.H. of E.            =     P. in a G.
P. in a B.A.        =    Y. in a D.            =    L. I.
I. in a F.        =    S. of the Z.            =    F. on a D.