３階
How to write Japanese & Stroke order

Check also 階  

Names and idioms with total stroke of 12:
喇  栄之  之則  松王  氏子札  

Names and idioms similar to ３階:
音階  表階子  裏階子  南階  全音音階  

Check stroke order for the words below:
塩新田  吾桑  煮やす  直衣姿  李太虚