flock to (?.)

• act with
• align with
• get together with
• go along with
• go in with
• join
• join hands with
• join up with
• join with
• line up with
• rally round
• range with
• side with
• stand in with
• strike in with
• string along with
• swing in with
• take part with
• take sides with
• team up with
• throw in with
• unite with