Save Yourself Some Time: The Toyota Yaris' 14" passenger side replacement windshield wiper is very hard to find in the newer-style beam blades. The 12" rear is also very hard to find because its a special rear blade that fits the special rear arm.
After exhaustive research, I've only found one aftermarket set-up that works: 'Trico NeoForm Beam Blades' on the front (yes, they have a 14") and 'Trico Exact Fit Rear Integral Blade' on the rear (yes, it fits the special rear arm). All of the above come with step-by-step, illustrated removal and replacement instructions - easy install. Got the whole set-up online.