[ Sau ] txoj hauj lwm: [ Tooj ]

☞ x ≔ Sau ← ‘A’ ; ‘B’ ; ‘C’.
☞ y ≔ x txoj hauj lwm: 1.
☞ z ≔ x ? 2.
✎ sau ntawv: y, tsum.
✎ sau ntawv: z, tsum.
A
B