Seid is the second person plural of the verb sein - to be
ihr seid = you are
seid is the inflected form of the verb sein (to be).ihr seid - you are (2nd person plural, informal)
Seit is a preposition,which translates as since and therefore has no past participle.If you mean seid (2nd person plural of the verb sein - to be) then the past participle is seid gewesen
there is no such word in German
greave is not a German word.
But isn't a German word.
Plick is not a German word.
Rouse is not a German word
"houpacker" means nothing in German; it is not a German word.
Oxded is not a German word
That word is not German, sorry.
Do you mean elan? Then the word exists in German
Sunna is not a German word. The closest German word is Sonne which translates as sun.