1- Parent's half-first-cousin.
2- Half-first-cousin's child.

Spouse's first-cousin-once-removed's spouse.

1- Parent's half-first-cousin.
2- Half-first-cousin's child.

1- Child of their parent’s half-pibling with the other parent’s pibling.
2- Child of their parent’s half-nibling with the other parent’s nibling.
3- Child of their parent’s half-pibling with the other parent’s nibling.
4- Child of their parent’s pibling with the other parent’s half-nibling.
5- Parent's sesqui-first-cousin.
6- Sesqui-first-cousin's child.

1- Stepparent's first-cousin.
2- Parent's step-first-cousin.
3- Step-first-cousin's child.
4- First-cousin's stepchild.
5- Step-1C1R.

1- Parent's first-cousin.
2- First-cousin's child.

1- Grandparent's sibling's child / Parent's first-cousin.
2- Parent's sibling's grandchild / First-cousin's child.