pk1,pk2,pk3,content
a,h,a,a-h-a
a,h,b,a-h-b
a,h,c,a-h-c
a,h,d,a-h-d
a,h,e,a-h-e
a,h,f,a-h-f
a,h,g,a-h-g
a,h,h,a-h-h
a,h,i,a-h-i
a,h,j,a-h-j
a,h,k,a-h-k
a,h,l,a-h-l
a,h,m,a-h-m
a,h,n,a-h-n
a,h,o,a-h-o
a,h,p,a-h-p
a,h,q,a-h-q
a,h,r,a-h-r
a,h,s,a-h-s
a,h,t,a-h-t
a,h,u,a-h-u
a,h,v,a-h-v
a,h,w,a-h-w
a,h,x,a-h-x
a,h,y,a-h-y
a,h,z,a-h-z