in　on　at　to　from　into　onto　out　of　for　with　by　about　over　under　around　through　before　after　during　between　among　across　along away　out　off　up　down　back　forward　around can　will　must　should　could　would　may　might　shall not　just　even　only　still　already　yet　almost ← These small words often add meaning.

て　に　を　は　で　へ　も　が　と　や　の　から　まで　より　だけ　しか　ほど　くらい　ばかり　など　も　こそ　でも　さえ　すら　ね　よ　か　な　ぞ　さ　とか　なんか　かな　よね ← They show how words are connected.