It looks like there are at least five different seating versions of 777s in operation. How often are the different versions swapped on the routes they fly?
LAX
There are no 5 versions of 777 in operation, should be just one if not 2, all should be 77L, the 2 77W HL8254 and HL8284 not sure if they had converted into 77L or not, but the other 2 3class HL7775 and HL7791 for sure had converted into 77L, then the other 3 oldest one had returned to the lessor already