Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
forth [fɔːθ] adv (out)
to go forthидти́*(impf) вперёд
to send forth посла́ть*(perf)
to go back and forth ходи́ть*(impf) взад и вперёд
to bring forth вынима́ть (вы́нуть perf)
and so forth и так да́лее
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.