Study: 2015 Trustwave Global Security Report
Date: June 9 2015

Of the corporate passwords that were cracked these are the most popular character sequences formats (n=441,960):

4.97%	ULLLLLNN
4.41%	ULLLLLLN
3.42%	ULLLLLLNN
3.16%	ULLLLLLLN
2.67%	ULLLNNNN
2.45%	ULLLLNNN
2.44%	ULLLLLNNNN
2.41%	ULLLLLLLNN
2.15%	ULLLLNNNN
1.66%	ULLLLLLNNNN

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.