There are relatively few languages that use deranked verb forms for all subordinate clauses (examples are found amongst the Tungusic and Salishan languages[2]), but most languages with significant verb inflection use deranking for at least some of their subordinate clauses. Exceptions can be found only amongst certain rigidly head-marking languages such as Ainu and Lakhota. Languages with deranking far down (rightward) on the hierarchy are most typically those with extensive nominal case systems.