The children of your first cousins are your children's second cousins.
The children of your second cousins are your children's third cousins,
And so forth.
The children of your second cousin are your second cousins, once removed. Your children and the children of your second cousin are third cousins to each other.
Your children and the children of your first cousin are second cousins to each other. Your children and the children of your second cousins are third cousins to each other.
Your second cousin's child and your child are third cousins to each other.
Cousin once removed.
The children of your mother's first cousins are your second cousins. The children of your mother's second cousins are your third cousins. And so forth.
The children of your mother's first cousins are your second cousins. The children of your mother's second cousins are your third cousins. And so forth.
The children of your parent's first cousins are your second cousins. The children of your parent's second cousins are your third cousins.
Your parent's first cousin's children are your second cousins. Your children and your second cousin's children are third cousins. Your children and your second cousin - or likewise you and the children of your second cousin - are second cousins, once removed. You and your parent's first cousin are first cousins, once removed.
Your first cousin's children are your first cousins, once removed. They are your children's second cousins. Your second cousin's children are your second cousins, once removed. They are your children's third cousins. And so forth.
The children of your mother's first cousins are your second cousins. The children of your mother's second cousins are your third cousins. The children of your mother's third cousins are your fourth cousins. And so forth.
The children of your mother's first cousins are your second cousins. The children of your mother's second cousins are your third cousins.
The children of second cousins are third cousins to each other.
You and your second cousin's children are second cousins, once removed. Your children and your second cousin's children are third cousins.
Second cousins
Your first cousin's children are your first cousins, once removed. Your second cousin's children are your second cousins, once removed.
your children are allowed to Mary your second cousins.your children are allowed to Mary your second cousins.