並ぶ（ならぶ）— line up; stand in a line
学生 が 並んで います。
The students are standing in line.
並ぶならぶ
line up; stand in a line
ならぶ
accent [0]In detail
Words
学生gakuseistudents
がga(subject marker)
並んでnarandeline up (て-form)
いますimasuare in that state (with the て-form)
Kanji
並ヘイ・
並ぶ describes people or things lining up or being in a row. Here ～ている describes the resulting state. 並べる describes someone arranging things.
Coco-sensei