Coordinating conjunctions：
FAN BOYS
F-for A-and N-nor B-but O-or Y-yet S-so
Adverbial conjunction：
HOT SHOT CAT
H-however O-otherwise T-therefore
S-similarly H-hence O-on the other hand T-thus
C-consequently A-also T-then
Subordinate Conjunction：
as because since although whereas even though while