How can lactose get into the cell if the LacY-gene is constantly blocked in absence o

Hello, i'm a bit confused right now. I have to prepare a presentation about the Lac-Operon.
In the default state, the repressor is bound to the operator, therefore the Lac-Genes LacZ, LacY, LacA are not expressed, therefore no galactosidase and permease are made.
However permease is needed to get the lactose into the cell in the first place, whereas galactosidase turns lactose into allolactose and inactivates the repressor.
How can the permease and the galactosidase be expressed, if expression only takes place, when the repressor gets inactived.
How can lactose enter the cell and inactive the repressor, if permease-transcription is blocked before that?
To me it seems like this chicken and egg problem. Can someone explain please?