Print fields starting with N to the end of line.

Hello, seems that I'm missing something obvious. There is file with
variable number of field, is there any simple way in awk to print
fields starting with field N up to the end of line. e.g.

$ cat test.txt
a b c
a b c d
a b c d e f
a b c d v e

How to print
$ awk <???> test.txt

d
d e f
d v e

Of course this is simplification of real data I have so I definitely
need awk to parse it ;) Thank you very much in advance.