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 UWA week 23 (1st semester, 1st exam week) ↓
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2:57pm Tue 7th Jun, ANONYMOUS

/,.*[a-zA-Z].*/d -- It means that lines which have at least 1 letter (a-z or A-Z) after a comma should be deleted. The only line which doesn't have a letter after comma is [Edith Cowan University,22202,4239,26441]. It only has numbers after any comma. So, only this remains and rest all are deleted. For instance the line [Queensland uNIversity of Technology,38423,7157,45580,x] has x at the end. Similarly, the line [> Blunderville University,1,2n,4] has n.

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