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