The remaining compound is called bahuvrīhī,
A compound which does not fall within any one of the rules given above, will be Bahuvrihi. This is a governing aphorism and extends up to sūtra 28. Thus चित्रगुः 'possessed of a brindled cow.',
शेषो बहुव्रीहिः
Adhyāya 2 · Pāda 2 · Rule 23