Radical 口

13 strokes

mouth 口 (5) + favor 恩 (521a) = eh 嗯

You open your mouth to ask your friend a favor but, before you can ask, they say, “So what do you want me to do now? Eh?” / [DIY pronunciation]

because 因 (520) + heart 心 (161) = favor 恩

Because she has such a kind heart she is always doing favors for people. / [No pronunciation needed]