Translation of "Threes" in Japanese

Misfortunes always come in threes.

不幸は重なるものだ。

You put your argument in threes,

論点を３つにすると

Guests arrived by twos and threes.

客は三々五々到着した。

These things always happen in threes.

この手の事故は３回は続く。

Birds came flying by twos and threes.

鳥が２羽３羽飛んできた。

They lodged by twos and threes in the cottage.

彼らは山小屋に三々五々泊まった。

They will lodge by twos and threes in lonely farmhouses.

彼らはあの寂しい農家に三々五々泊まるだろう。

After 11 o'clock the guests began to leave by twos and threes.

１１時を過ぎると、お客たちは三々五々帰り始めた。

Some go in groups organized by their schools, but most go in twos and threes.

学校から団体で行く人たちもいるが、ほとんどの人たちはばらばらに行く。