How to spell the long O sound

The long O sound, /o/, can be spelled many ways.  Typically, it is spelled with an O as in no, go, most.  It can also be spelled: O:  no OE:  toe OA:  oath EAU:  beau OW:  snow OUGH:  dough AOH:  pharogh AU:  chauffer EW:  sew OO:  brooch OU:  shoulder OT:  depot