Vim golf: delete back one word and change to end of line

Start with ...

The LookupError 

... in a text file with the cursor positioned at orange.

Then use the Vim command TEC (yes, all are caps) to get ...

The LookupE 

... which enables easy typing of ...

The LookupExpression 

... in a single go.

The secrets are the T motion to go back before the last occurrence of a linewise character and the C command to delete everything to the end of the line and drop automatically into insert mode.