３階
How to write Japanese & Stroke order

Check also 階  

Names and idioms with total stroke of 12:
備  荒川  住石  材本  八尾川  

Names and idioms similar to ３階:
羽階  五階  三階建  風力階級  律音階  

Check stroke order for the words below:
置賜  解ほぐす  上乃木  滋史  喉袋  川社  訪問看護