Concat multiple video and audio files with ffmpeg

Concat multiple video and audio files with ffmpeg

I have an array of audio and video clips, where each audio clip has a 1:1
correlation with it's video clip. The encoding of each video and each
audio clip are the same. How can I concat all of the audio clips, and all
the video clips, then merge them together to output a video. As of now I
only figured out how to merge 1 audio clip with 1 video clip:
$ ffmpeg -i video_1.webm -i audio_1.wav -acodec copy -vcodec copy output.mkv