When

pan

(at which, on which, during which)

pryd

(at what time, as a direct question)

pryd

(at what time, as an indirect question)

amser

(during the time that)

os

(since; given the fact that; considering that)

pan

(as soon as, at the time that)

pan

(during the time that)

pan

(at what time; at which time)

pan

(whereas; although; in spite of the fact that)

tra

(during the time that)

tra

(whereas; although; in spite of the fact that)