D0 or D+ decay mode (5 digits)

1st digit : 1=D+, 2=D-, 3=D0, 4=D0bar
2nd digit : 1=K0, 2=K+, 3=K-
3rd digit : (1st pi) 1=pi0, 2=pi+, 3=pi-
4th digit : (2nd pi) 0=not exist, 1=pi0, 2=pi+, 3=pi-
5th digit : (3rd pi) 0=not exist, 1=pi0, 2=pi+, 3=pi-

For exaple
D0 -> Kpi : 33200
D+ -> Kpipi 13220