This case is very easy to do manually. OP very lucky to forgot only part of one word.
Forget one word but know its place, still quite easy. Anything after that starts getting complicated and time consuming.
OP is very lucky, not just with the missing word being an "sw" word which is limited according to a poster above but also that there are knowledgeable posters to help out here. You will never now how frustrating it is when you try to access your wallet and then discover you can not because you can not remember your details any more. Then you mind goes on speed when you begin to calculate your worth in that wallet.