C1111233131211111211113313331333133313232321333133313331333131121333132313131   >>    C111123313121111121111331333133313331323232133313331333133313112133313231313   <<    C1111233131211111211113313331333133313232321333133313331333131121333132313133   >>      C1111233131211111211113313331333133313232321333133313331333131121333132313132   >>