username,password,firstname,lastname
tester1,login,first,tester
tester2,login,second,tester
tester3,login,third,tester 
tester4,login,fourth,tester
tester5,login,fifth,tester 
tester6,login,sixth,tester 
tester7,login,seventh,tester
tester8,login,eigth,tester
tester9,login,ninth,tester
student1,login,first,student 
student2,login,second,student
student3,login,third,student
student4,login,fourth,student
student5,login,fifth,student
student6,login,sixth,student
student7,login,seventh,student
student8,login,eigth,student
student9,login,ninth,student
teacher1,login,first,teacher
teacher2,login,second,teacher
teacher3,login,third,teacher
teacher4,login,fourth,teacher
teacher5,login,fifth,teacher
teacher6,login,sixth,teacher
teacher7,login,seventh,teacher
teacher8,login,eighth,teacher
teacher9,login,ninth,teacher