C11111211113313112113313331333133313133313231322331323132313232221   >>    C1111121111331311211331333133313331313331323132233132313231323222   <<    C11111211113313112113313331333133313133313231322331323132313232223   >>      C11111211113313112113313331333133313133313231322331323132313232222   >>