Which preposition to use with bumpings

of Occurrences 5%

Strange cries arose, the bumping of sampans, the mournful caterwauling of a stringed instrument.

against Occurrences 2%

He jumped from the window sill and made a fuss bumping against Oliver's legs.

along Occurrences 1%

Long bamboo poles plied bumping along her gunwale, sticking into the air all about her, many and loose and incoordinate, like the ribs of an unfinished basket.

at Occurrences 1%

Martin stopped short, as if to say something, and then changed his mind, while a bumping at the pantry door attracted the attention of us all.

Which preposition to use with  bumpings