verbhangs, hanging, hung / hanged
1-lenga‘The washing is hanging on the line’ — Iwashingi iyalenga kulayini.
2-lengisa‘They used to hang people for crimes such as murder’ — Babejwayele ukulengisa abantu abenze amacala afana nokubulala.
In sense 1 'hung' should be used as past tense and past participle, but in sense 2 'hanged' is the correct form. For example: The washing 'hung' on the line. In the old days he would have been 'hanged' for murder.