This is the 3537th most frequent Dutch word.
opliep
"Opliep" means "increased" or "rose" (past tense of "oplopen").
In this case, 'liep op' implies an encounter with obstacles, showing a figurative usage.
Ze liep op tegen onverwachte moeilijkheden.
She encountered unexpected difficulties.
In this sentence, the phrase 'liep op' suggests moving upwards towards a location (the hill).
Hij liep op naar de heuvel.
He walked up to the hill.
Here, 'liep op' refers to an increase in amount, illustrating a metaphorical growth.