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nouns (## 1–2), parts of body (## 3–4), agricultural terms (## 5–6), words connected with clothing (## 7–8); and pairs of words with initial ma-/mi(## 9– 12; see 5.6), seven of which are from medial-waw roots (## 11–12). He finds no positive difference in meaning between the pairs, apart from the few cases of collectives/nomina unitatis (# 6 and perhaps # 3). 1. המשא / םשא guilt 2. המקנ / םקנ dominion, vengeance 3. הרבא / א רב pinion 4. הרג / רג back 5. הקלח / ח קל territory 6. הציצ / ץיצ blossom 7. הדפא / דופא ephod 8. הרוגח / רוגח loin-covering 9. הנתמ / ןתמ gift 10. תרכממ / מ רכמ ware 11. הרוגמ / רוגמ terror 12. הלוחמ / לוחמ dance In five cases he found that one of the forms occurs in a poetic or elevated style, and the other mainly in an ordinary prosaic style (## 13–17).
Emerton et al. (1992) studied this question.