C11111211113313112113313331333133313133313231322331333132222131   >>    C1111121111331311211331333133313331313331323132233133313222213   <<    C11111211113313112113313331333133313133313231322331333132222133   >>      C11111211113313112113313331333133313133313231322331333132222132   >>