I need brain teaser help, please!

[Sonya]

The title of the brain teaser is "Knock Knock"
I just have empty blanks and an alphabet code under each blank. I'll try to do this so you can easily understand:

3 blanks : RBJ under each blank
6 blanks : ZDBYYC
3 blanks : BIT
1 blank : I
4 blanks : TYYP
4 blanks : KITJ
2 blanks : YG
4 blanks : NPYU
4 blanks : RBIR
3 blanks : LIZ
3 blanks : LBX
2 blanks : NR
3 blanks : LIZ
6 blanks : DICCJT
3 blanks : RBJ
6 blanks : ZDBYYC
2 blanks : YG
4 blanks : BIPT
6 blanks : QUYDQZ

The 2nd puzzle is called "Skip to the Lou"
Different code, of course. I hate these things!

8 blanks : ISRWWRLN
6 blanks : IPTDDG
2 blanks : ZD
6 blanks : XHLNAA
4 blanks : BHFW
4 blanks : KRGG
3 blanks : NAZ
3 blanks : UDH
9 blanks : IHIWALJAJ

Thanks for your help!