Mikä is declined like kuka: the plur. root is mi.

Sing.Plur.
Nom.mikämitkä
Part.mitämitä
Gen.minkä[miden or mitten]
In.missämissä
Instr.minmin
etc.etc.

In poetry are found mi (nominative) and min (accusative).

Kumpi is declined like a comparative.

Relative Pronouns.

The relative pronouns are joka, who or which, jompi, which of two.

Joka is declined on the same principle as kuka, jompi like a comparative.

Sing.Plur.Sing.Plur.
Nom.jokajotkajompijommat
Part.jotajoitajompaajompia
Gen.jonkajoidenjommanjompien
joittenjompain
In.jossajoissajommassajommissa
etc.etc.

Indefinite Pronouns.