This will prove a very expensive error!
1	This	This	X	_	_	0	root	_	_
2	will	will	X	_	_	1	flat:foreign	_	_
3	prove	prove	X	_	_	1	flat:foreign	_	_
4	a	a	X	_	_	1	flat:foreign	_	_
5	very	very	X	_	_	1	flat:foreign	_	_
6	expensive	expensive	X	_	_	1	flat:foreign	_	_
7	error	error	X	_	_	1	flat:foreign	_	SpaceAfter=No
8	!	$!	PUNCT	_	_	1	punct	_	_
