As an addition to Scoggs' answer (0050291):
There's also the option to use a C-marker (which stands for Center). I don't know if there are airports on Altis with 3 parallel runways, but eg. Frankfurt/Germany uses 25L, 25C and 25R as runway markings.

Also it may be correct, that 22R is used as a taxiway, as the original yellow taxiway-line only goes to 22L, as seen in the previously attached file.