25904

For the first one, which was sdw - d - fdnh, I got pat a cake as I followed the rule which was the previous three letters. The next one, wkh - zhvw - zlqg - eorzv, I think is the west wind blows and the last one, brx - duh - zrunlqj - kdug is you are working hard.

The one I made up was rah - vshfldo - wklqj. The answer is one - special - thing.

The rule I made up is, if it's a vowel then the next vowel and if it's a consonant then the next consonant e.g. moli is like.