𒀊
ab
window; opening; niche, nook (cf., aba) [AB archaic frequency: 384; concatenates 2 sign variants (sign also used for èš and aba - for this reading and meaning in Fara period, see Krebernik, Beschwörungen].
𒆜
kaskal
expedition, caravan; road; journey (kaš4/kas4, 'to travel fast', + kalag/kal, 'swift') [KASKAL archaic frequency: 35].