Organize the items given into categories according to size.
Table, pencil, ruler, book
Small: 
- Pencil
- Ruler

Medium
- Book

Large:
- Table
Complete the following task based on the instruction and optional input provided.### Instruction:
Organize the items given into categories according to size.

### Input:
Table, pencil, ruler, book

### Output:
Small: 
- Pencil
- Ruler

Medium
- Book

Large:
- Table