right if you have the following permutation order 1 4 2 3 you're actually allowed to look at all of the other words because x3 is at the end of the permutation order in order to produce x-ray so all of these four and the fourth thing is a similar so all of these four things will appear during training and you will learn from them so in expectation C you will basically have seen all variants of different of different versions of the context which which helps a lot apparently right so in the in order to achieve this they had to