落luò · là

to leave behind by accident. 12 strokes, radical 艹, first met in HSK 3.

Pinyin luò · làStrokes 12Radical 艹Band HSK 3Words 4

What 落 is made of

艹 (cǎo, grass) and 洛 (luò, a river in the Shanxi province).

艹 carries the meaning — plant — and 洛 carries the sound.

Strokes 1–3 write 艹, then strokes 4–12 write 洛.

Free, with no account: the app draws each stroke, then you write it and it says which stroke went wrong.

落(là)	to leave behind by accident 不小心忘记带走某样东西他把重要文件落在了车上。He left behind an important file in the car by mistake. Lesson 315, 岁月温情与使命在肩 · 匠心筑梦与浮世清晖 · Master Crafts, Ocean Dreams & Creative Vistas
落(luò)后(hòu)	fall behind 跟不上别人前进的速度旧的耕种方法早就落后于时代了。The old farming methods had long since fallen behind the times. Lesson 205, 节令农事与忙碌收获 · 乡村农业与田园风光 · Rural Agriculture, Countryside Life & Harvest Seasons
降(jiàng)落(luò)	to land (aircraft) 飞机等从空中下降到地面货机满载设备平稳降落了。The cargo plane, fully loaded, managed to land smoothly. Lesson 299, 街市繁华与实证通达 · 经世学林与市井清音 · Academic Scholarship, Civic Transit & Family Order
落(luò)实(shí)	to implement, put into practice 指把计划或要求切实执行到位各项安全规范得到严格落实。Every safety rule was strictly implemented. Lesson 455, 恪实经商 · 商海统筹与求真明理 · Commercial Strategy & Rational Inquiry

All 30 of them, and what the radical means, on the 艹 radical page.