The term 'belonging to' can be expressed in a variety of ways. The crossword solutions ITS, HIS, MAS, ASOOF, and PARTOF all refer to the concept of ownership or possession. ITS is an abbreviation for 'it's, ' which is a contraction of 'it is.' HIS is a possessive pronoun meaning 'belonging to him.' MAS is a possessive pronoun meaning 'belonging to her.' ASOOF is an acronym for 'as soon as possible, ' which implies that something belongs to someone until it is given away. Finally, PARTOF is a compound word meaning 'part of, ' which suggests that something belongs to a larger group or entity.