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Ad-s- : regularly ass-, but also adserere to assert/lay claim vi. 64, adsiet may be present vi. 92, adsimus let us be present vii. 99, adsequi to follow/attain viii. 8, x. 9, adsignificare to signify/point out often (always except assignificant vii. 80), adsumi to be taken to viii. 69, adsumat let him take to ix. 42, adsumere to take to x. 58.
Ad-sc-, ad-sp-, ad-st- : always with loss of the D, as in ascendere to climb, ascribere to inscribe, ascriptos inscribed (vii. 57), ascriptivi enrolled (vii. 56), aspicere to look at, aspectus look/sight, astans standing by.
Ad-t- : always att-, except adtributa distributed v. 48, and possibly adtinuit held to (F1, but "att-" F2) ix. 59.
Con-l-, con-b-, con-m-, con-r- : always coll-, comb-, comm-, corr-.
Con-p- : always comp-, except conpernis knock-kneed ix. 10.
Ex-f- : always eff-, except exfluit flows out v. 29.
Ex-s- : exsolveret would release v. 176, exsuperet would overcome vi. 50, but exuperantum overcoming vii. 18 (normalized in our text to exsuperantum).
Ex-sc- : exculpserant had carved out v. 143.
Ex-sp- : always expecto I await etc. vi. 82, x. 40, etc.
Ex-sq- : regularly Esquiliis on the Esquiline Hill ; but Exquilias v. 25, Exquiliis v. 159 (manuscript Fv), normalized to Esq- in our text.
Ex-st- : extat stands out v. 3, vi. 78 ; but exstat v. 3, normalized to extat in our text.
In-l- : usually ill-, but inlicium lure/allurement vi. 88 bis twice, 93 (manuscript "illicitum"), 94, 95, inliceret would entice vi. 90, inliciatur may be enticed vi. 94 ; the variation is kept in our text.
In-m- : always imm-, except in ⟨in⟩mutatis unchanged vi. 38, where the restored addition is unassimilated to indicate the negative prefix and not the local in.
In-p- : always imp-, except inpos not master of v. 4 bis twice (once manuscript "ineos"), inpotem powerless v. 4 (manuscript "inpotentem"), inplorat implores vi. 68.
Ob-c-, ob-f-, ob-p- : always occ-, off-, opp-.
Ob-t- : always opt-, as in optineo I hold/occupy etc. vii. 17, 91, x. 19, optemperare to obey ix. 6.
Per-l- : pellexit lured vi. 94, but perlucent shine through v. 140.