___
___ 共 [in common]
is in  ___
Original meaning: put together → joint | united | in common
On-reading: キョウ as in 中共 chūkyō ___
KYŌ tomo -domo in common 
-共 -domo "humble plural" suffix  
私共 watakushidomo we, us (humble)  
中共 chūkyō Communist China