# 3' splice model : default 
# A C G T
19 18 27 36 
36 5 34 25 
20 7 51 23 
29 13 14 44 
splice
5 2 78 15 
3 7 15 75 
4 1 83 12 
5 51 13 31 
5 7 79 9 
53 10 27 11