NRF52811-CAAA ADC Input pins

Hi, 

In nRF52811-CAA chip, which pins are allocated to ADC inputs. In Table 122 of datasheet which shows pinout for WLCSP package, it just mentions AIN1, AIN2, and AIN3. 

Are there just 3 ADC inputs available on this chip? It seems there should be 8 ADC channels available. 

Please advise.

Thanks

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