REGEX Questions

(?i)^(who|what|where|when|why|how|was|did|do|is|are|does|if|can|could|should|would|will|did|do|is|are|won’t|were|weren’t|shouldn’t|couldn’t|cannot|can’t|didn’t|did not|does|doesn’t|wouldn’t|aren’t|won’t|wont|were|werent|shouldnt|couldnt|cant|didnt|doesnt|wouldont|arent|wont).(brand|name).