Good evening mates! I'm Brazilian and I'm studying Swahili alone. This is the only group, in whole web, about this language. I have a grammar question. I hope someone can help. I ask you pardon if this group it isn't for this question. In the sentences Niko wapi? Where am I?, Uko wapi? where are you? yko wapi? where is he or she. Why we have to use yko (y-ko) and not ako wapi? (a-ko) (the others are: tuko wapi? where are we? mko wapi? where are you-pl-, wako wapi? where are they?).