paper clips
windows
a paper clip
a window
doors
pencil sharpeners
clocks
calendars
a door
a pencil sharpener
calendars
pencil sharpeners
a window
pictures
a paper clip
a clock
a calendar
a door
a clock
windows
clocks
a workbook
a calendar
a workbook
pictures
doors
a pencil sharpener
workbooks
workbooks
paper clips