It's a false pattern. jI- matches with jIH and ma- matches with maH, but none of the other prefixes and pronouns match. "You" (singular) is bI-, but SoH. "They" (non-sapient) uses a null-prefix, but the pronoun bIH.
Well, I've been at this almost two months, and I'm still having trouble learning that thrice-damned prefix chart; the LAST thing I need is words that seem related but which aren't, or which have shuffled the meanings around for no good reason.