\def\P{\vbox{}\vfill\eject}
\count0=0 \P
\count0=0 \count1=1 \P
\count0=0 \count1=1 \P
\count0=1 \count1=0 \P
\count0=1 \count1=0 \P
\count0=0 \count1=0 \count2=0 \count3=0 \count4=0 \count5=0
  \count6=0 \count7=0 \count8=0 \count9=1 \P
\count0=1 \count1=2 \count2=3 \count3=4 \count4=5 \count5=6
  \count6=7 \count7=8 \count8=9 \count9=10 \P
\count0=2 \count1=0 \count2=0 \count3=0 \count4=0 \count5=0
  \count6=0 \count7=0 \count8=0 \count9=0 \P
\count0=-2 \P
\count0=-3 \count1=-3 \P
\bye