bèi, bó
flourishing, thriving
Original form of 勃. Depicts plants thriving (丰) and a child (子) growing.
Evolution

Oracle script
(~1250-1000 BC)
Bronze script
Late Western Zhou (~800 BC)
Seal script
Shuowen (~100 AD)Regular script
ModernComponent uses
Meaning component in 1 character (1 verified)
Sources
季旭昇《說文新證》p.503-504