• kemmus trimucronatus,
• pemmus trimucronatus,
• oemmus trimucronatus,
• lwmmus trimucronatus,
• lsmmus trimucronatus,
• ldmmus trimucronatus,
• lrmmus trimucronatus,
• l4mmus trimucronatus,
• l3mmus trimucronatus,
• lenmus trimucronatus,
• lekmus trimucronatus,
• lejmus trimucronatus,
• lemnus trimucronatus,
• lemkus trimucronatus,
• lemjus trimucronatus,
• lemmys trimucronatus,
• lemmhs trimucronatus,
• lemmjs trimucronatus,
• lemmis trimucronatus,
• lemm8s trimucronatus

The adjective form of "Lemmus trimucronatus" would be "Lemmus trimucronatus". Adjectives in English do not change form based on the specific noun they modify.

The plural form of the word "Lemmus trimucronatus" is "Lemmus trimucronatus" as it is a scientific name and does not change for plurality.

The singular form of the word "Lemmus Trimucronatus" is "Lemmus Trimucronatus". This is because "Lemmus Trimucronatus" is already the scientific binomial name of a specific species, often referred to as the three-toed or Siberian brown lemming. In scientific nomenclature, the binomial name is used for both the singular and plural forms of a species name.