copycat/input/problems.csv

1	abc	abd	ijk
2	aabc	aabd	ijkk
3	abc	abd	kji
4	abc	abd	mrrjjj
5	abc	abd	rssttt
6	abc	abd	xyz
7	abc	abd	ijjkkk
8	rst	rsu	xyz
9	abc	abd	xyyzzz