How to send an apology letter when quarreling with colleagues?

As the saying goes, reconciliation between enemies is inevitable, and contradictions will arise between people. However, contradictions should be resolved in time, and they should not be allowed to accumulate and deepen, which is not conducive to their survival and development in society. It is not enough to quarrel with colleagues. You should take the initiative to apologize to your colleagues, so as to show your sincerity and be accepted by your colleagues.