title= .  

ch1=1, 1
ch2=2, 3
ch3=3,, 6
ch4=4, 4
ch5=5, 5
ch6=6, 6
ch7=7,
ch8=8,
ch9=9, 7
ch10=10, 8
ch11=11, 9
ch12=12,
ch13=13,