R = CGHRST
F = { C --> T , CS --> G , HR --> C , HS --> R , HT --> R }
Address, Course, Department, Grade, Hour, Level, Name, Phone, Room, STudent-id, Teacher, Units
R = ACDGHLNPRSTU
F = { C --> TU , S --> NAP , T --> LD , CS --> G , CS --> G , HS --> R , HT --> R }
R = ABCDE
F = { AB --> C , CD --> B , BC --> E }
R = ABCDEG
F = { CD --> B , BE --> A }
Create your own test case4.