Opinions wanted please. What does this say?

[Ann from Sussex]

Could someone look at this census entry for me please

http://search.ancestry.co.uk/iexec/?...c=&pid=2274676

and tell me what you think WALHAM COLLINGFORD's (6th line down) relationship to ROBERT MITCHELHILL (5th line down) is. To me it looks like "joint co op". Ancestry has him as "joint lodger" but it definitely doesn't say that.

Ann