C11111211113313112113313331333132313331322132333133313232213232223321   >>    C1111121111331311211331333133313231333132213233313331323221323222332   <<    C11111211113313112113313331333132313331322132333133313232213232223323   >>      C11111211113313112113313331333132313331322132333133313232213232223322   >>