> Since adults responded with both
*heafs and * heaves /-vz/, both of these answers were considered
correct. It must be noted that although 42 % of the adults gave
*heaves as the plural of this item, employing what would amount
to a morphophonemic change along the lines of: knife: knives;
hoof: hooves, only three children out of a total of 89 answering this
item said "heaves; 9, or 10 % added nothing, and an additional
four formed the plural with the wrong allomorph, i.e. they said
/hiyfəz/, treating the /-f/ as if it belonged to the sibilant-affricate