C1111233131211111211113313331333133313232321333133313331313123323131   >>    C111123313121111121111331333133313331323232133313331333131312332313   <<    C1111233131211111211113313331333133313232321333133313331313123323133   >>      C1111233131211111211113313331333133313232321333133313331313123323132   >>