Looking on the internet deeply has found these results:

I knew him since january is the most popular phrase on the web.

I have knowing him since january 10 results on the web	I knew him since january 14 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
It doesn't look like this phrase is very popular! The search could not find any examples on the internet.	Jan 4, 2016 ... �I knew him since January 2001. He was very kind, honest, energetic, and always passionate about work. Knowing him and working with him�... Dec 17, 2015 ... �I know the accused as my former extra lessons teacher and I knew him since January this year. He used to give me some blue tablets that�... Dec 17, 2015 ... �I know the accused as my former extra lessons teacher and I knew him since January this year. He used to give me some blue tablets that�... Aug 27, 2015 ... I knew him since January 1st 1984, I am glad I refused to change my stance on him! You guys need to read this speech given by Joshua�...

I have knowing him since january

10 results on the web

I knew him since january

14 results on the web

More popular!

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

Jan 4, 2016 ... �I knew him since January 2001. He was very kind, honest, energetic, and always passionate about work. Knowing him and working with him�...
Dec 17, 2015 ... �I know the accused as my former extra lessons teacher and I knew him since January this year. He used to give me some blue tablets that�...
Dec 17, 2015 ... �I know the accused as my former extra lessons teacher and I knew him since January this year. He used to give me some blue tablets that�...
Aug 27, 2015 ... I knew him since January 1st 1984, I am glad I refused to change my stance on him! You guys need to read this speech given by Joshua�...