second-cousin-twice-removed-in-law

1- Second-cousin-twice-removed's spouse.
2- Spouse's second-cousin-twice-removed.

My second-cousin-twice-removed-in-law is a good person.

co-second-cousin-twice-removed-in-law

Spouse's second-cousin-twice-removed's spouse.

My co-second-cousin-twice-removed-in-law is a good person.