Double Digrams

Double digrams, such as TUTU, serENENess, or drAMAMine, are not paritcularly common in English words; the editor informs me that in Kucera and Francis\u27s Computational Analysis of Present-Day American English they occur, on the average, in less than one word in a thousand in running text . This article gives a type-collection of the 54 different double diagrams found in boldface entries in the Merriam-Webster Pocket Dictionary. It is presented in the form of a quiz for the reader. Only solid double diagrams are permitted; words in which the letter are interrupted by a hyphen or a space, as in retRO-ROcket or GO-GO, don\u27t count. At the end, the reader is invited to supply words containing double diagrams not represented in the Pocket Webster, but in the Webster\u27s Second or Third. A list of double diagrams known to occur in the Air Force list of Webster\u27s Second is given, augmented by a few not there given (such as AIAI in aiaiai, or EHEH in sheheheyanu)