The students are going out of the classroom in three and fours.in three and （说三道四＼三言两语＼各奔东西＼三五成群）

The students are going out of the classroom in three and fours.in three and （说三道四＼三言两语＼各奔东西＼三五成群）
The students are going out of the classroom in three and fours.
in three and （说三道四＼三言两语＼各奔东西＼三五成群）

The students are going out of the classroom in three and fours.in three and （说三道四＼三言两语＼各奔东西＼三五成群）
三五成群

in three and fours

三五成群