As has been noted stem-final labial consonants undergo iotation, whereas stem-final unpalatalized coronal consonants and affricates undergo case-specific palatalization and unlike Lithuanian, Latvian does not exhibit assimilative palatalization. However, the last large group of consonants, the dorsal consonants are an exception to both of these rules. Latvian has 3 unpalatalized dorsal consonants , the voiced and , the latter occurring only in loanwords, represented respectively by the letters ⟨K⟩, ⟨G⟩ and ⟨H⟩, as well as palatalized versions of the natively occurring ones and represented by the letters ⟨Ķ⟩ and ⟨Ģ⟩ respectively.