One more question, when you see ZZ run and TT run, what does that mean? Pat Nevermind. Found it. TT - Terrible two's - Outcome pattern of BBPP or PPBB or BBPPBB Pattern of two in a row, followed by two in a row.( BBBB PP BB PP BB PP BB PP BB PPPPPP). The terrible two's start after the 4 banks and ends before the six players. ZZ - Zig Zag (runs) - Any combination of two or more opposites in a row BPBPBP or PBPBPBP or PBP First set is a zig zag run of six, second is a zig zag run of seven, third ex. Is a zig zag run of three(which has two opposites) Zig zag runs occur at the same frequency as straight runs occur.