Just a very quick review. Drag the sentences just below to their proper place (in peach). Use 'G' to symbolize "I'll go" and 'S' to symbolize "I'll stay".

 

is a negation which could be symbolized as '~G'.
"I'm not going"
is a conditional which might be symbolized as 'G>S'.
"If I go, then you will stay"
is a conjunction which could be symbolized as 'G&S'.
"I'm going and you're staying"
"You'll go or I'll go."