A team has finished a game with 6-12-6 runs-hits-errors line 19 times since 1897, most recently Atlanta Braves on 17 September 1988. That is about one every 23,316 team-games.
Box score for the most recent one ↗
6-11-8 6-11-10 6-12-3 6-12-2 6-12-0 6-12-5 6-12-6 6-12-4 6-12-1 6-12-8 6-12-7 6-12-9 6-13-3
The whole distribution — Runs-Hits-Errors Lines · All 18 shapes