Study: 2013 Trustwave Global Security Report
Date: February 22 2013

Of the corporate passwords that were cracked these are the most popular character sequences formats (n=2,961,120):

10.65%	LLLLLLNN
4.49%	ULLLLLNN
3.85%	ULLLLLLN
3.24%	LLLLNNNN
3.16%	LLLLLNNN
2.48%	ULLLLLLLN
2.46%	ULLLLLLNN
2.32%	ULLLLNNN
1.78	ULLLNNNN
1.75%	NNNNNN
1.74%	ULLLLLLLNN
1.53%	LLLLLLLL
1.25%	ULLLLNNNN
1.21%	ULLLLLNNNN
1.20%	LLLLLLLN
1.15%	LLLLLL
1.10%	NNNNLLLL
0.93%	ULLLLLN
0.93%	ULLLNLLL
0.88%	ULLLLLLLLN
0.88%	ULLLLLNNN
0.80%	LLLLLLLNN
0.76%	UUUUUNNN
0.73%	LLLLLLLLN
0.72%	NNNNNNNN

PasswordResearch.com Comment:
L = Lowercase, U = Uppercase, N = Number, and S = Special or Symbol. So the password "Lullaby14" would have a character sequence of ULLLLLLNN.