３階
How to write Japanese & Stroke order

Check also 階  

Names and idioms with total stroke of 12:
斑  入荷  四折  合わせる  秀以  

Names and idioms similar to ３階:
各階  羽階  森階  階畑  地上階  

Check stroke order for the words below:
星斗  多市  疑りぶかい  禅室  採種圃  三陸海岸  帆根川