Although not belonging to the Indo-European family, Finnish has personal pronouns that resemble (to a layperson, at least) the corresponding pronouns in Indo-European languages. For example, the consonant
/m/ in the first person pronouns minä (singular) and me (plural) is also very common in first person pronouns in several Indo-European languages. Similarly for the second person sinä/se and for the third person hän/he. Interrogative pronouns kuka ("who") and kumpi ("which") also seem to share the consonant
/k/ with Indo-European.
What is the relationship (if any) between these pronouns?