Equivalent to it + -'s. From the earlier form it's (it + 's), which is now considered nonstandard. Began to displace his as the possessive of the neuter pronoun in the Middle English period; had fully displaced it by the 1700s.
Try searching for words with the letters ITS, words with the phrase ITS, words starting with the letters ITS, or words ending in the letters ITS.
Words… ending with q, starting with q, starting with qa, starting with qo, with two letters, starting with x, starting with j, ending with j,
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NWQYL, JQWI, KSLBZCU, HWRID, WJFA, TGGMTTY,