The left is character Feather (Post 89), the right is character Support (Post 622). The skeleton supporting feather is wing.
The small seal script of character Wing is
Similar to big seal script.
The clerical script of character Wing is
It is interesting that the positions of the two parts exchanged: the left is character Support, the right is character Feather. The reason why they are exchange positions is because therefore, the left Support could have a long falling-right stroke, which could hold the teacher. In this way, the character has a typical clerical script long falling-right stroke, and still get a tight structure. Otherwise, the Support on right, if you want a typical clerical script long falling-right stroke, you would make the character too wide.