When signing the alphabet in American Sign Language, only two letters require actual finger movement: the Z, and this
[DOC] [TLE] Coarticulation in American Sign Language Fingerspelling [PAR] Dec 1, 2012 ... Fingerspelling is a category of American Sign Language (ASL) signs that are ..... 
the same types of frequency effects and reduction patterns in signed ... 
fingerspelled letters (J and Z), movement is not specified and should not have a 
.... articulated with only the two fingers that will be used to articulate the R. [DOC] [TLE] Synthesizing the finger alphabet of Swiss German Sign Language ... [PAR] comprehension rate of the signing avatar was highly satisfactory ... being the two-
handed alphabet for British Sign Language.