One more thing. P in this case =preterm. Wehn you are thinking of parity, that is the number of actual births. sometimes the letters are GPTPAL, but rarely. Usually if parity is considered, as in actual hospital paperwork, then they write it out. Also, someone might ask, "what is her parity?" which is like asking, "what is her GTPAL?" That would sound weird. So, they ask, "what is her parity?" and you would respond, "She is a G5, T_, ..." . let me know if that helps. Good luck.