šu-dul: CT 35, pl. 01-08, BM 108862 r ii 53 (šudul[yoke]); Ea 01 352 (šudul[yoke]).
šu-du-un: YOS 01, 53 r ii 63 (šudul[yoke]).
uš-ti-num₂: Ebla Sign List 73 (šudul[yoke]).