The compiler of this local quiz calls these letters lead to well known sayings but I've looked at list after list but can't find these three. Can anyone out there help...Pleeeeese??
1...T.D.D.U.P.(4.5.2.2.4)
2...A.R.B.T.T.(1.4.7.3.6.)
3...T.I.A.D. (8.2.7.3.)