Looking on the internet deeply has found these results:

I know only is the most popular phrase on the web.

I only know 1378,000 results on the web	I know only 1997,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
I Only Know (What I Know Now) (5:16). experimental � electronic � british � electronica � dubstep ... Also featured on. I Only Know (What I Know Now) IOTDXI 30 Years of R&S Records. We don't have a wiki here yet... Play on youtube�... 2:33. $0.99 � In MP3 cart View MP3 Cart. 30. 3. I Only Know One Way. 3:59. $0.99 � In MP3 cart View MP3 Cart. 30. 4. All I Know. 3:39. $0.99 � In MP3 cart View MP3 Cart. 30. 5. Lonely As A Man Can Be. 3:38. $0.99 � In MP3 cart View MP3 Cart. Sep 27, 2010 ... Loading... Rating is available when the video has been rented. This feature is not available right now. Please try again later. Uploaded on Sep 27, 2010. I Only Know (What I Know Now) from the Klavierwerke EP R&S Records "I Only Know How To Love". They say love can take you far. Be your self and there you are. Once in a lifetime when will she be mine, heaven knows. Love can take you. Up the mountains, down below. Day or night she won't let go, Love like a�...	It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

I only know

1378,000 results on the web

I know only

1997,000 results on the web

More popular!

I Only Know (What I Know Now) (5:16). experimental � electronic � british � electronica � dubstep ... Also featured on. I Only Know (What I Know Now) IOTDXI 30 Years of R&S Records. We don't have a wiki here yet... Play on youtube�...
2:33. $0.99 � In MP3 cart View MP3 Cart. 30. 3. I Only Know One Way. 3:59. $0.99 � In MP3 cart View MP3 Cart. 30. 4. All I Know. 3:39. $0.99 � In MP3 cart View MP3 Cart. 30. 5. Lonely As A Man Can Be. 3:38. $0.99 � In MP3 cart View MP3 Cart.
Sep 27, 2010 ... Loading... Rating is available when the video has been rented. This feature is not available right now. Please try again later. Uploaded on Sep 27, 2010. I Only Know (What I Know Now) from the Klavierwerke EP R&S Records
"I Only Know How To Love". They say love can take you far. Be your self and there you are. Once in a lifetime when will she be mine, heaven knows. Love can take you. Up the mountains, down below. Day or night she won't let go, Love like a�...

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.