Code:
NAME,CLASS,COST,SECTION
JOHN,1,10,410
JOHN,2,20,410
JOHN,3,30,410
ABEL,1,20,411
ABEL,2,30,411
ABEL,3,70,411
BONO,1,30,412
BONO,2,10,412
BONO,3,20,412
CRIS,1,40,413
CRIS,2,20,413
CRIS,3,10,413
DINA,1,50,414
DINA,2,30,414
DINA,3,20,414
DINA,1,60,415
DINA,2,10,415
DINA,3,30,415