и вообще, "ушко слева" и "ушко справа" на самом деле имеют очень разные значения и просто так их перекидывать нельзя.
"阝 originated as an abbreviation for two different characters when they occur as components. On the LEFT side, 阝 is from 阜 fù 'hill' (as in 阴 yīn), which is Kangxi radical 170; on the RIGHT side, 阝 is from 邑 yì 'city' (as in 都 dōu), which is Kangxi radical 163."
Serge Mileshkin
康熙字典 говорит 古文嶺字, т.е. 岭
Wenlin говорит тоже самое
"阝 originated as an abbreviation for two different characters when they occur as components. On the LEFT side, 阝 is from 阜 fù 'hill' (as in 阴 yīn), which is Kangxi radical 170; on the RIGHT side, 阝 is from 邑 yì 'city' (as in 都 dōu), which is Kangxi radical 163."