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Jyutping bei2
Pinyin

Definitions (CC-CANTO)
  1. to adjoin/to border on/to help/to assist/to connect/to adjoin

[-]

Jyutping pei4
Pinyin

Definitions (CC-CANTO)
  1. to adjoin/to border on/to help/to assist/to connect/to adjoin
Definitions (Unihan)
  1. help, assist
  2. connect, adjoin
  3. Cangjie Input
    WPP

[-]

Jyutping pei3
Pinyin

Definitions (CC-CANTO)
  1. to adjoin/to border on/to help/to assist/to connect/to adjoin

毘 [毗]

Jyutping
Pinyin

Definitions (CC-CEDICT)
  1. variant of 毗[pi2]