rubber - pencil case - pens - chair
chair
chair - board - door - teacher
teacher
map - poster - window - computer
computer
pen - coat - rubber - ruler
coat
board - computer - exercise book - window
window
bag - window - door - chair
bag
notebook - textbook - exercise book - student
student
pencil case - pen - rubber - notebook
notebook
bag - textbook - pencil case - desk
desk
