After completing an exercise with the ναῦς as focus, the student (who is not a native English speaker, who had already mastered several other languages, but has only very elementary Greek) had to align words on his own. This shows what he was able to do. "With" remains a problem here; εὐθὺς could have been solved by looking it up in a dictionary.

καὶ πλεύσαντες They set sail εὐθὺς πέντε five καὶ and εἴκοσι twenty ναυσὶ ships They πλεύσαντες immediately set πλεύσαντες sail πλεύσαντες with five πέντε and καὶ twenty εἴκοσι ships ναυσὶ