A team has finished a game with 10-12-6 runs-hits-errors line 5 times since 1897, most recently Philadelphia Stars on 11 May 1940. That is about one every 88,600 team-games.
Box score for the most recent one ↗
10-12-1 10-12-3 10-12-9 10-12-0 10-12-4 10-12-5 10-12-6 10-13-1 10-13-2 10-13-0 10-13-4 10-13-3 10-13-5
The whole distribution — Runs-Hits-Errors Lines · All 18 shapes