Parents initials are three-letter words including surnames. Kids initials are two-letter words not incluing surnames. All genders are your choice.
AND & THE
NO
MY
IF
---
KIN & TWO
AN
OR
IT
---
FOR & PEN
ON
IN
AS
HE
---
LIT & BAN
SO
OF
IS
---
TAN & WHY
BE
DO
US
ID
---
SAY & ASK
WE
GO
BY
---
LIE & NOR
OX
UP
TO