 @position-try --bar {
    left: 0; /* not overflowing #container */
  }
  #t1 {
    /* If --foo is not found, we should still try --bar even if we limit the
       number of applied position fallbacks to five because the --foo's are not
       added to the `position fallbacks list` per spec. */
    position-try-fallbacks: --foo, --foo, --foo, --foo, --foo, --foo, --foo, --bar;
  }

  /* --f1 .. --f4 all overflowing #container */
  @position-try --f1 { left: 10px; }
  @position-try --f2 { left: 10px; }
  @p