name_to_mon() has a bunch of alternate monster names, such as
"gray-elf" to match "grey-elf" and "ki rin" to match "ki-rin". Those
worked as intended when they occurred at the end of a wish, but only
worked in the middle if their length was the same or one character
less than the canonical name in mons[].mname.
djinni figurine -> h - a figurine of a djinni
genie figurine -> i - a figurine of a djinni
figurine of mumak -> j - a figurine of a mumak
mumak figurine -> k - a figurine of a mumak
figurine of mumakil -> l - a figurine of a mumak
mumakil figurine -> nothing fitting that description exists
(The one-less case worked because its following space ended up being
implicitly removed when skipping ahead by the length of mons[].mname;
subsequent explicit removal didn't find a space so was a no-op.)