In the given code language, what does the code ‘tj’ stand for?

Explanation

The data given to us: ‘work never goes waste’ is written as ‘rb mk ni tj’ ‘never waste your time’ is written as ‘ni ap sy rb’ ‘focus on your work’ is written as ‘mk ap cn or’ ‘focus goes with time’ is written as ‘sy tj cn ke’ From this we can deduce that, never waste = ni rb focus = cn goes = tj work = mk time = sy Hence, tj is equivalent to goes