and

(not subordinating) 

or

(not subordinating) 

but, however

(not subordinating, requires a comma) 

but, rather, instead

(not subordinating, requires a comma) 

for, because

(not subordinating, requires a comma) 

until

(subordinating) 

since (casual b/c)

(subordinating) 

that

(subordinating) 

whether, if (when it means whether)

(subordinating) 

because

(subordinating) 

if

(subordinating) 

although

(subordinating)