C11111211113313112113313331333132313331322132333133313232213331323221211   >>    C1111121111331311211331333133313231333132213233313331323221333132322121   <<    C11111211113313112113313331333132313331322132333133313232213331323221213   >>      C11111211113313112113313331333132313331322132333133313232213331323221212   >>