Spot the real word (L4)

Two of these are made up. Which one is the real Old Frisian word for:

grave

to dig

Two of these are made up. Which one is the real Old Frisian word for:

lykje

to seem

Two of these are made up. Which one is the real Old Frisian word for:

lizze

to lie, to lay

Two of these are made up. Which one is the real Old Frisian word for:

siede

to boil

Two of these are made up. Which one is the real Old Frisian word for:

driuwe

to drive

Two of these are made up. Which one is the real Old Frisian word for:

fleane

to fly