1. The spouse of one's parent's half-sibling.
2. The half-sibling of one's parent-in-law.
My half-pibling-in-law is a good person.
1- Half-pibling's spouse.
2- Spouse's half-pibling.
half-pibling-in-law.
Spouse's half-pibling's spouse.
half-co-pibling-in-law.