ນ່າ ໃນພາສາລາວບໍ່ມີຄວາມໝາຍ, ແລະລາວບໍ່ມີພາສາຂຽນ ພາສາເວົ້າຄືໄທຍ.= You are wron about this one also. Here a sample of phasa khien= Rot ( a car ) Here a sample of phasa vow = Lot ( a car ).
Here anothe sample: Khroo ( Teacher ) phasa kien Khoo ( Teacher ) phasa vow.
Those samples up there are original phasa Lao. Laos PDR not use them any more.