BlueNRG-2 pins for UART comms

[SBukh.1]

I have a custom-built board with a BlueNRG-2 chip on it. The BlueNRG-2 chip is flashed with the UART version of the binary provided in the STM32CubeExpansion_BLE2_V1.0.0 package.

Can anyone provide me the pins that the BlueNRG-2 uses for its UART comms?