Stuck and dont want to guess the answer

[InterNette]

Working on a shawl and the pattern part of the lace says
LK3m3 insert needle thru 3 stittches from left, like standard knit but dont take off needle YO and knit another stitch, my question is
which do I knit the one next to the 3 on the needle or back into the 3 on the needle? Since it is beginning of pattern I cant make out the look yet to know which is correct and I am trying to save myself ripping apart. Can anyone help?
Thanks
Of course there is a Rk3m3 and would be the same question for me.