that merged a bunch of letters into just being 2x2 pixel squares. m was a 3x2 square and l was 1x3 and i was 1x2
the last time i saw an alphabet this degenerate (with this many merged letterforms) was book pahlavi
"Book Pahlavi was the most common form of the script, with only 13 graphemes representing 24 sounds. The formal coalescence of originally different letters caused ambiguity" - source: https://en.wikipedia.org/wiki/Pahlavi_scripts