充分考虑

• 亠(top part; lid; cover)ASSOCIATIVE
• 允(permit, suitable)PHONO-SEMANTIC

A head filled to overflowing allows everything to be completely filled.

• 八(divide; separate; eight)ASSOCIATIVE
• 刀(knife; blade; sword)RADICAL

Using a knife to chop something in half represents division or separation.

• 耂(old person; aged person)RADICAL
• 丂(background sound; curved object)PHONETIC

An elderly person bending their back like a curved object represents the image of long years of examination.