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