Cain fails the book of Offense Basics a total of nine times, all with the bonus success chance before the system has mercy on him.
[Inscription Successful]
[Inscription Improved: Basic 2]
[Book of Offense Basics: Dark Elven Blade Forms] has been created
[Skill Learned] Open details to see available attack combinations.
There's a low, middle and high strike, plus a dashing strike and a retreating strike for each combination included in the offense basics. Learning them lets Cain clearly see that there's an advanced form of each as well as dozens of possible combinations available, but from another book, possibly two if the flowing combos and transitions aren't in the advanced offense book.
But even just with this, he's way ahead of where he was. Cain selects one single skill to see what they look like.
[Scimitar and Short Spear: Dashing Strike] 1MP deals 150 percent base damage. Allows use of [Flow: Repeated Stab] [Not Known]