３階
How to write Japanese & Stroke order

Check also 階  

Names and idioms with total stroke of 12:
但田  村本  千津  下市木  牛岡  

Names and idioms similar to ３階:
二階  階定  鉄階子  七音音階  震度階  

Check stroke order for the words below:
提槁  鯉角  大空中  崛踞  悪たれる